Thunderbolt Certified—Power meets performance in this TAA-compliant Thunderbolt dock. 3x Thunderbolt ports deliver up to 100W charging (96W certified) and 40Gbps to the laptop, and up to 15W and 40Gbps to your most powerful peripherals. The Plugable TBT4-UDX1 is ready to work
Dual 4K or One 8K—A dual monitor docking station with customizable connection options. Get dual 4K 60Hz through HDMI and Thunderbolt – USB C to HDMI adapter included. Or, go big with a single 8K 30Hz display via Thunderbolt 4 port
11 Port Expansion—HDMI docking station built for modern laptops, 3x Thunderbolt 4 ports (40Gbps) — 1x to host, 2x for your SSD, phone, or other devices, 1x HDMI, 4x USB 3.0 (10Gbps), 2.5Gbps Ethernet, SD reader, combo audio jack, 100W charging – charge a MacBook Pro 14” M1 / M2 / M3 Pro from 0-50% in 30 minutes
Works With—This Thunderbolt 4 hub is compatible with Windows 10 and newer, and macOS 11.2+; As a Macbook Thunderbolt dock, dual display is only available on M1 Pro/Max, M2 Pro/Max, M3 Pro/Max, and Base M4/Pro/Max systems; For best performance, pair with a Thunderbolt host system
Enhance Your Setup—Elevate your productivity with seamless connectivity and lightning-fast data transfer speeds using this Thunderbolt 4 hub; Streamline your workflow and power up your devices efficiently
Connect with a Plugable docking station designed for modern laptops. The Plugable Thunderbolt 4 and USB4 Docking Station (TBT4-UDX1) with 100W charging offers something a lot of Thunderbolt docking stations lack, Thunderbolt ports (which are fully USB4 compatible, by the way). In addition to the 40Gbps Thunderbolt connection to the host, get 2x downstream ports (40Gbps) for your most powerful peripherals.
Get powered up. With 100W charging (96W certified), charge a MacBook Pro 14” from 0%-50% in about 30 minutes*. Charge a Dell XPS 15 9520 from 0%-50% in about 60 minutes**. Extra Thunderbolt ports offer more than data. Each one borrows 15W from the host power supply to provide power to connected devices. When one Thunderbolt device is connected, the host receives 81W, and if two Thunderbolt devices are connected, the host receives 66W.
Laptop docking stations like the Plugable TBT4-UDX1 let you spread out on two screens at up to 4K 60Hz. If you’re presenting to clients or streaming some shows, the 4K HDMI port connects an extra display at up to 60Hz. An included USB-C to HDMI adapter lets you connect a second 4K 60Hz monitor. But if you really want to pack in the pixels, go straight to the Thunderbolt port to connect an 8K monitor up to 30Hz.
Diving deeper into its features, the 11-port expansion on this USB C hub is perfect for ultra-thin devices like the Surface Pro 8. Get instant access to 1x HDMI port, 4x USB 3.0 ports, a 2.5 Gigabit Ethernet port, an SD Card reader, and even a combination audio jack. And the convenience continues with an included 3’ (1m) Thunderbolt cable. Just a heads up, on Mac, dual display is only available on M1 / M2 / M3, 'base' M4 systems with a Pro or Max chip, like the Macbook Pro M1 Pro/Max, M2 Pro/Max, M3 Pro/Max, M4 Pro/Max.
*Internal testing based on solo charging a MacBook Pro 14" M1 Pro starting from 0% battery
**Internal testing based on solo charging a Dell XPS 15 9520 with a 12th generation Intel CPU running Windows 11
Get three Powerful Thunderbolt 4 ports (USB 4 compatible). 1x to the host, 2x downstream.
Dual 4K 60Hz
Single 8K 30Hz
Connect 2x displays up to 4K 60Hz (USB-C to HDMI adapter included), or 1x 8K 30Hz via Thunderbolt.
USB C dock provides up to 100W (96W certified) to laptop, 15W charging to Thunderbolt ports, with power allocated based on connected devices.
Compatible with Windows 10+, macOS 11.2+ (Dual display requires M1 Pro/Max, M2 Pro/Max systems).
Host computer with a built-in Thunderbolt 4 or USB4 port running Windows 10 and later or macOS 11 and later
Drivers
Typically no driver installation is necessary on the host computer in order to use the TBT4-UDX1. On Windows, it may be necessary to manually install an Ethernet adapter driver to ensure the best performance.
Mac Configuration
Apple Mac systems with an Apple processor must have an M1 Pro/Max, M2 Pro/Max, M3 Pro/Max processor in order to use dual displays
Display Capabilities
The TBT4-UDX1 has one built-in HDMI video output port supporting a display up to 4K resolution at a 60Hz refresh rate. A USB Type-C to HDMI adapter is included which can allow for a second display up to 4K resolution at a 60Hz refresh rate.
The downstream Thunderbolt ports can support a compatible external display up to 8K resolution at a 30Hz refresh rate when connected via a Thunderbolt cable.
Not Compatible with:
Host computers that do not have a Thunderbolt 4 or USB4 port
Important Notes:
Windows systems may require updated Thunderbolt drivers, Thunderbolt NVM firmware, System BIOS / UEFI firmware, and updated graphics processing unit (GPU) graphics card drivers from the system manufacturer (Apple systems provide this automatically)
Important Note for Thunderbolt 3 and Thunderbolt 4 Windows systems:
Thunderbolt 3 & 4 include advanced security features to help keep your system safe. On Windows systems, Thunderbolt devices must be authenticated ("approved") when they are attached to a Thunderbolt 3 or 4 host system for the first time. If not approved, devices attached to the docking station will not function. Please note that for some newer Windows hosts this may be done automatically via Secure Connect and require no user intervention.
Important Note for Apple Silicon Macs with macOS 13 Ventura and macOS 14 Sonoma:
For macOS 13 Ventura and macOS 14 Sonoma on Apple Silicon based Macs, macOS now requires approval to allow USB and Thunderbolt communication with the host system before the dock will function. By default macOS will ask every time a new device is connected, however, this behavior can be changed by going to: System Settings-> Security & Privacy -> Security -> Allow accessories to connect and choosing the Ask for New Accessories option (so that the Mac will only ask for new devices that are attached instead of every time).
To connect the TBT4-UDX1:
Connect the included power adapter to both the TBT4-UDX1 Thunderbolt 4 docking station and to a known-working electrical power outlet. Once connected to an electrical power source, the dock will power on automatically. Once powered on, there will be a small solid green power indicator light present on the front of the unit.
Connect one end of the included Thunderbolt 4 cable to the Thunderbolt 4 host port (with the computer icon) located on the front of the docking station, and then connect the opposite end of the cable to the Thunderbolt 3/Thunderbolt 4/USB4/USB-C port of your host system. When the TBT4-UDX1 is connected to a compatible host computer, there will be a small solid blue host connection indicator light present on the front of the unit.
Windows: Approve the new device with the Thunderbolt Control Center utility on your system if needed. Click here for more information.
Mac: Approve the new device when prompted by macOS, optionally changing this behavior in the macOS System Settings. Click here for more information.
Windows PCs with internet access via another network adapter should automatically download and install drivers from Windows Update without a separate download.
If you experience issues with the adapter, first try applying the drivers listed here. Then, if issues continue, try the latest drivers from Realtek, available here .
Windows 11 should install the latest driver automatically, provided an Internet connection is available when the device is connected. You will likely need to look in the Optional Updates section of Windows Update.
Up-to-date Mac systems (approximately 10.14.3+) will have the driver for the adapter built-in, though throughput is limited without installing the driver.
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Below is a list of power adapter models used by Plugable docking stations. We offer refurbished replacement power adapters on eBay as they are available for purchase, however, we may not have replacement power adapters available for all of our docking stations.
If the power adapter for your docking station or region is not listed, out of stock on eBay or if you have any other questions regarding replacement power adapters for our docks please contact us at support@plugable.com and we will be happy to assist further.
We offer a 30-day return period for our replacement power adapters listed on eBay.
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This is the standard USB connection that most computers offered prior to the introduction of USB Type-C (USB-C). Even after the introduction of USB Type-C, this is still quite common.
It can provide data transfer rates up to the USB 3.1 Gen 2 (10 gbps) specification depending on the host and device, but does not directly support video in the way that USB-C Alternate Mode does. This limitation makes DisplayLink USB graphics adapters and docking stations ideal on systems that do not have USB-C, or in instances where more displays are needed beyond available video outputs of a PC.
This type of connection comes in a couple different styles depending on whether USB 3.0 and higher transfer rates are supported (bottom graphic). Usually this type of connection is used to plug into USB devices that do not have a fixed cable connected, such as USB docking stations, USB hubs, printers, and others.
One of the first connectors for charging a smartphone, wireless game controller (such as the Sixaxis and DualShock 3), and other small devices such as external hard drives. Not commonly used today, but is still used in some cases. Most devices using USB Mini B are using USB 2.0, though a USB 3.0 variant does exist. This specification also added USB On-The-Go (OTG) functionality, though it is more commonly implemented with Micro USB.
A smaller connector that serves many of the same uses as the Mini B connector, with added optional features such as Mobile High-Definition Link (MHL) to allow devices like smartphones to output video to larger displays without requiring a dedicated port for video output.
The larger variant of USB-B is most commonly used for external hard drives for higher 5Gbps transfer rates.
The most recent USB connection, USB Type-C (USB-C), represents a major change in what USB can do. The connector is smaller, can be connected in two orientations, is able to carry substantially more power and data, and can directly carry video signals of multiple types (HDMI, DisplayPort, etc.) Intel has also adapted the USB-C connector for use with Thunderbolt 3 and Thunderbolt 4.
It is important to note that while all Thunderbolt 3 and Thunderbolt 4 connections are USB-C, not all USB-C connections can be used with Thunderbolt 3 or Thunderbolt 4 devices.
No. Most DisplayPort to HDMI cables and adapters are one-way adapters from a DisplayPort Source (computer or docking station) to a HDMI Sink (television, computer monitor, or projector). These cables do not work in reverse.
DisplayPort uses packet-based data transmission, breaking the video stream into individual packets of data allows for longer cable runs, use in both copper and fiber-optic cables, and allows for higher bandwidth than other video formats. It is relatively easy to convert from DisplayPort to HDMI (computers with HDMI output ports already do this internally) and dual-mode DisplayPort outputs have built-in adapters to output a HDMI signal for use with passive DisplayPort to HDMI adapters.
HDMI uses a video signal, similar to DVI, this requires more power to operate at the same cable lengths as DisplayPort and requires significantly more processing power to create DisplayPort packet-based data.
Externally powered HDMI to DisplayPort adapters do exist, these generally have a USB or small barrel plug for power, and can convert from a HDMI Source to DisplayPort Sink. In most cases they have reduced resolution or refresh rates compared to modern signal sources and can introduce delay in the data connection between the display and computer potentially causing reduced connectivity or display performance problems.
We do not currently recommend using HDMI to DisplayPort adapter with our docking stations. In our testing they have been unreliable compared to a native DisplayPort connection. Many of our newer docking stations include both HDMI and DisplayPort outputs to reduce the need for additional adapters or adapter cables.
Computer networking is a complex topic. In this article, we'll be taking a deep dive on the nuances of network performance for those who need some additional explanation while striving to be concise, and to educate users of various experience levels relating computer hardware and computer networking.
If you just need to know how to perform a network performance test/benchmark, jump down to configuring iPerf.
Core Network Concepts
LAN vs WAN
With regards to network performance, it is crucial to first separate whether an issue is with Wide Area Network (WAN) performance, or if the issue is with Local Area Network (LAN) performance.
Your LAN is essentially the network inside your home or business. Many homes use a combination modem/router device provided by their Internet Service Provider (ISP). In some cases, especially in businesses, you may have a separate modem and router, along with other equipment connecting to the router such as a network switch.
Your modem, and the connection it establishes to your ISP—whether through coaxial cable, fiber, phone lines, or long-range wireless—essentially marks the point between the WAN and the LAN. The connection your modem makes to your ISP is the WAN, and any devices you connect through your router behind that modem belong to the LAN.
Link Rate
Almost every type of connection your computer makes to any piece of hardware will have a link rate of some kind. The link rate establishes how fast data can possibly be transferred across any given connection, but it does not guarantee how fast the hardware on either end of the connection will actually transfer data.
The concept of link rates, and their related bottlenecks, is likely best conveyed by giving an example of what connections might be involved in transferring a file from one computer on your LAN to another.
800Mbps—The file source is a USB 3.0 thumb drive capable of 100MB/s (800Mbps) read/write.
480Mbps—The USB 3.0 thumb drive is plugged into a USB 2.0 port on the PC, which has a maximum throughput of 480Mbps
1000Mbps—PC1's Ethernet connection establishes 1Gbps (1000Mbps) link to the router via Ethernet
300Mbps—The router connects to a second PC (we'll refer to this as PC2) via Wi-Fi, and it has established a 300Mbps link to the Wi-Fi adapter on PC2
480Mbps—The Wi-Fi adapter on PC2 is connected via a USB 2.0 port. The link rate of the USB connection to PC2 is at 480Mbps
6000Mbps—PC2 is going to store the file on an internal hard drive with a link rate of 6Gbps
1600Mbps—File Destination: SATA hard drive capable of 200MB/s (1600Mbps) read/write.
Following this chain, we see that 300Mbps is the slowest link rate established. This means that, regardless of the link rates established elsewhere, the absolute maximum the data can possibly be transferred is 300Mbps.
if we were to change the Wi-Fi connection to a wired Ethernet connection capable of 1Gbps, our performance bottleneck would then become the USB 2.0 connection to the USB drive where the file is stored.
Ports and Interfaces
Interfaces
A network interface represents connections, whether wired or wireless, that are made to form a network between devices.
Ports
Some may refer to physical hardware connections as "ports". For the purposes of networking, ports are logical constructs that can also be referred to as "network ports". Each network interface has 65,535 of these logical ports. Each port on a network interface is a separate data connection.
Benchmarking Network Adapter Performance
To properly benchmark network adapter performance, we need to:
Use a simple LAN configuration
Eliminate bottlenecks, especially link rate bottlenecks
Websites like speedtest.net, fast.com, and other performance tools in your web browser are going to use your WAN connection, and are not appropriate for determining if a network adapter is working well.
Transferring files from one computer to another on your LAN is typically not the best way to benchmark a network adapter. File transfers are bottlenecked by a number of things, including performance limitations of the disk the data is on, and often times a lack of establishing parallel network connections to perform the task.
One of the most accurate ways to benchmark network performance on a LAN is by using iPerf . To more effectively benchmark network adapter performance, it is best to establish a point-to-point connection between two PCs, rather than connecting through a router or switch.
Next, you'll need to run iPerf in client mode, targeting the IP address of the server/interface where iPerf is running in server mode. Additionally, we'll run the test for 30 seconds using -t 30 and with four parallel connections using -P 4. Running 4 parallel connections is optimal for saturating a network link.
Windows
Open Command Prompt
Press Windows Key + R or + R, then enter cmd in the window that appears
Search the Start Menu for Command Prompt, and open it
Navigate Command Prompt to the directory the directory where iPerf is located
The cdcommand is for 'change directory'
If you have a folder named 'iperf' on your Windows desktop, you can reach it in command prompt with the command cd %USERPROFILE%\Desktop\iperf
Run iperf in client mode via Command Prompt (replace 192.168.0.200 with the IP address of the server/interface where iPerf is running in server mode)
iperf3.exe -c 192.168.0.200 -t 30 -P 4
macOS / Linux
Open Terminal
Run iPerf in client mode (replace 192.168.0.200 with the IP address of the server/interface where iPerf is running in server mode)
iperf3 -c 192.168.0.200 -t 30 -P 4
iPerf should start performing a network performance test. If the test fails to start, make sure that iPerf is not being blocked by your PC's/Mac's firewall.
Why iPerf is Ideal for Benchmarking
Unlike a file transfer, iPerf runs in memory on the PC and generates data to send using the CPU directly. This alleviates potential bottlenecks generated by storage devices, and allows you to explicitly control how many parallel connections are being used to transfer data rather than being unsure if parallel network connections are being used by other means.
Conclusion
There's a lot more to networking that isn't covered in this article, but we hope this helps explain enough to get an accurate measure of your network performance.
Whether you're on Windows, macOS, or Linux, it's common to add new audio devices to your computer.
Some examples of additional audio devices you may want to switch to include:
Bluetooth headsets, headphones, and speakers
Speakers built into a display, such as a TV or monitor
A USB sound card, digital audio converter (DAC), or analog to digital converter (ADC)
USB microphones
Audio jacks on a docking station
These steps don't apply to the Plugable Performance NIX HDMI Capture Card (USBC-CAP60).
Here are the steps that you need to set a new default audio recording or output device on different operating systems.
Set Audio Output Device
Set Audio Recording Device
Set Default Playback Device in Windows
Check that your device is properly connected, and that any necessary drivers are installed
It is also a good idea to make sure that your sound device is turned on, and that the device's volume control is not at the absolute minimum setting
Right-click on the speaker symbol in the Windows taskbar/system tray
Windows 7/8.x—Select Playback Devices. The Sound window will open with the Playback tab highlighted
Windows 10/11—Select Open Sound Settings then click the link under 'Related Settings' for Sound Control Panel, then click the Playback tab
Alternatively, after selecting Open Sound Settings, use the dropdowns under the Output header
Find your device in the window
A Plugable USB 3.0 docking station or sound-enabled display adapter will appear as Plugable Audio
A Plugable USB 3.0 Silicon Motion docking station or sound-enabled display adapter will appear as SMI USB Audio
A Plugable USB 2.0 docking station will appear as USB Multimedia Audio Device
A Plugable USB Audio adapter will appear as USB Audio Device
Right-click on the device you found in step 3 and select Set as Default Device. A check mark should appear next to your device, and sound should now play through it
A Plugable USB Audio adapter will appear as USB Audio Device
Set Default Playback Device in Linux
Ensure that you audio device is connected to the PC
If the audio device is self-powered, it is a good idea to make sure that it is powered on, and that the device's volume control is not at the absolute minimum setting
Launch the 'Settings' application in your distro
Go to the 'Sound' option
Find the dropdown for your 'Output Device', and change it to your preferred output device
For additional sound device controls, you may want to consider using Pulseaudio Volume Controls (package name pavucontrol)
Set Default Recording Device in Windows
Check that your device is properly connected, and that any necessary drivers are installed
It is also a good idea to make sure that your sound device is turned on, and that the device's volume control is not at the absolute minimum setting
Right-click on the speaker symbol in the Windows taskbar/system tray
Windows 7/8.x—Select Recording Devices. The Sound window will open with the Recording tab highlighted
Windows 10/11—Select Open Sound Settings then click the link under 'Related Settings' for Sound Control Panel, then click the Recording tab
Alternatively, after selecting Open Sound Settings, use the dropdowns under the Input header
Find your device in the window
A Plugable USB 3.0 DisplayLink docking station or sound-enabled display adapter will appear as Plugable Audio
A Plugable USB 2.0 docking station will appear as USB Multimedia Audio Device
A Plugable USB Audio adapter will appear as USB Audio Device
Right-click on the device you found in step 3 and select Set as Default Device. A check mark should appear next to your device, and sound should now play through it
A Plugable USB Audio adapter will appear as USB Audio Device
Set Default Recording Device in Linux
Ensure that you audio device is connected to the PC
If the audio device is self-powered, it is a good idea to make sure that it is powered on, and that the device's volume control is not at the absolute minimum setting
Launch the 'Settings' application in your distro
Go to the 'Sound' option
Find the dropdown for your 'Input Device', and change it to your preferred input device
For additional sound device controls, you may want to consider using Pulseaudio Volume Controls (package name pavucontrol)
Most Windows notebook computers power management settings will default to putting the computer to sleep with the lid closed, regardless of any external displays, keyboard, or mouse connected to the computer. If this is happening but you would prefer the system to remain active with the lid closed utilizing the external display or displays, these settings can be changed by performing the following:
For Windows 10:
Start by right-clicking on the Start button and select Power Options from the menu.
From the right side of the Power Options settings page, select the blue link for Additional power settings
From the choices present on the left-hand side of the Power Options window, please click on Choose what closing the lid does
Make sure the setting for When I close the lid under the Plugged In column is set to Do Nothing
Click the Save Changes button and restart the system (making sure that the laptop’s power adapter is also connected) and test the behavior again.
For Windows 11:
Start by right-clicking on the Start button and select Power Options from the menu.
In the upper left corner of the settings window, in the search box, type "lid" then select Change what closing the lid does from the search results
Make sure the setting for When I close the lid under the Plugged In column is set to Do Nothing
Click the Save Changes button to apply the new settings.
Closing the lid should no longer put the computer into sleep mode when an external display and power source is connected, instead one of the external displays should now become the Primary display with the desktop icons instead of the laptop's built-in display.
The lid may still need to be opened to perform the following tasks:
To power on the computer from a fully powered off state
To log into the computer if logged out or if the computer is restarted with the lid closed
To wake the computer from a deep sleep state ( hibernation, or Windows hybrid sleep states )
If your Windows laptop will not boot properly when a docking station is connected to the laptop, most often the cause is an external device connected to the docking station (for example an external USB storage drive) as opposed to the dock itself.
If you are affected by this condition, please follow these steps in order to isolate the behavior further:
Disconnect all USB devices from the docking station and put them aside for the moment.
Disconnect any displays connected to the dock's video outputs.
Disconnect any audio devices connected to the dock's audio ports (if present).
Disconnect the Ethernet network cable from the dock's Ethernet port (if present).
The only remaining connections should be the dock's power adapter cable and the USB cable used to connect it to the laptop. No other external devices should be connected to the dock.
While in this state, reboot the laptop to test the behavior.
Assuming the laptop boots as expected, please reconnect each device back to the dock one at a time and reboot after each one to test the behavior again. Please reconnect the displays first, then the audio devices, then the Ethernet cable. Please reconnect any USB devices to the dock last, again rebooting after each one is added to test the behavior.
In our experience helping others, the most common cause of this behavior is an external USB storage drive connected to one of the dock's USB ports. In some cases, a laptop may try to boot from an external storage drive by mistake as opposed to the laptop's built-in storage drive. Since most external USB storage drives are not 'bootable', this can interrupt the boot process.
If this behavior occurs, the most common way to mitigate the behavior is to access the laptop's System BIOS (also known as UEFI firmware) to change the 'boot order' settings to ensure that the laptop's internal storage drive is the first boot option. Doing so helps ensure that the laptop will not try to boot from an external USB storage device.
Every laptop system is different, so the best resource for accessing the System BIOS and changing the settings is the manual for the laptop provided by the laptop manufacturer.
Please be very careful when changing settings within the System BIOS, because changing the wrong setting can cause problems. If you are unsure of how to check or change these settings after consulting your laptop's manual, it is best to contact the laptop manufacturer directly for guidance.
There are various reasons and configurations that can benefit from having more than one network adapter present on a PC.
For users with newer networking products, featuring 2.5Gbps link rates or greater, it may be beneficial to prioritize that network connection over others on your PC that are still connected to your network/LAN.
If your package is missing one or more of the items that should be included with your Plugable dock (included items are listed on a chart on the side of the box), start by double checking if the part is still in the packaging. Pieces can occasionally get stuck in the corners under the main insert in the box.
If you are still unable to locate the piece, please contact support@plugable.com with the following information:
1. Amazon Order ID (or other proof of purchase) associated with your Plugable device.
2. A description of the parts that are missing from your order.
3. Your preferred shipping address (and a phone number associated with that address).
Most Plugable docks do not officially support monitors over 60Hz including 120Hz or 144Hz refresh rate unless otherwise specified on the Plugable product page or listing.
DisplayLink USB Graphics technology and Silicon Motion based docking stations and graphics adapters, like our USB 3.0 dual display and USB Type-C triple display docking stations, are limited to 60Hz fresh rate by the USB graphics controller hardware.
USB Type-C DisplayPort Alternate Mode docking station and ports on our USB Type-C Triple Display Docking Stations can support higher refresh rates, but may be limited by the computer's capability and available bandwidth to the docking station. Additionally, when paired with DisplayLink or Silicon Motion USB graphics, having displays at different refresh rates may reduce overall system performance. Due to this we normally recommend limiting all connected displays to 60Hz refresh rate when using DisplayLink and Silicon Motion graphics technology with directly connected, or USB Type-C DisplayPort Alternate Mode controlled displays.
Monitors with refresh rates higher then 60Hz may be connected to a docking station operating at up to 60Hz, or connected directly on the computer's HDMI or DisplayPort to ensure the display is powered by the system's native GPU.
Unfortunately Plugable products do not support the Apple SuperDrive.
The Apple SuperDrive has stringent power requirements that can only be met by directly connecting the SuperDrive to your host laptop. As a result at this time Apple recommends only using their USB-C adapter cables. You can find more information on that here → How to connect the Apple USB SuperDrive
If you have purchased a Plugable product to use with your Apple SuperDrive, and would like some additional assistance please do not hesitate to reach out. You can do so by emailing support@plugable.com, or going to Plugable.com/Support.
The below guide is an advanced troubleshooting step, and we do not recommend doing so unless you are comfortable manually altering files on your Apple product running macOS. You may not be able to perform the below troubleshooting step if you are unable to execute administrative credentials on your laptop. Please reach out to our support first if you do not wish to attempt the below instructions. You can do so at Plugable.com/Support
How to delete a specific Ethernet adapter from your Network devices on macOS
Click on the Apple logo in the top left corner of your primary monitor, and select ‘System Preferences’
Next select ‘Network’ in the ‘System Preferences' window.
In the now visible list, please select the Plugable Ethernet, or Thunderbolt Ethernet device that may not be working as expected.
Once selected click on the minus button in the bottom left of the network window.
Click on Apply in the bottom right.
Next click on the plus button in the bottom left of the network window, and add the previously removed device.
Click on Apply in the bottom right.
Test to see if this has resolved the unexpected behavior, and assure that your Ethernet is now working.
If this does not resolve the problem, please proceed to the next section (As noted previously the next section is for advanced users only!)
Manually erase your macOS Network Settings to fully reset the Network configuration
This will fully erase all of your Network configuration! Do not skip any steps, and proceed only if you are comfortable with each step!
Open the ‘Finder’ app, then in the ‘Go’ menu at the top of your screen select ‘Computer’
Click on ‘Macintosh HD’ then Library, Preferences, SystemConfiguration
Copy the file named ‘NetworkInterfaces.plist’ to your desktop as a backup of your current configuration.
Delete the original version of the ‘NetworkInterfaces.plist’ located in the SystemConfiguration directory.
Restart your Mac
Login to your Mac, and return to System Preferences → Network
If the list is now empty, please re-add the Plugable or Thunderbolt network adapter by clicking on the plus button in the bottom left of the Network window. Once done click on 'Apply'.
Test to see if this has resolved the unexpected network behavior
I am still unable to get my Ethernet connection working on my Mac
If this is the case please reach out to our support team. When you do please include a diagnostic log gathered using our PlugDebug tool (instructions are provided on the PlugDebug page). If you are not able to gather the PlugDebug diagnostics do not worry we are still here to help! Please reach out to our support team at support@plugable.com or Plugable.com/Support with a detailed description of your problem, and the model of Plugable product you are using.
We are often asked if it is okay to leave a notebook computer connected to one of our USB-C docking stations with Power Delivery for extended periods of time. The short answer is yes, it is no different from leaving the laptop connected to the manufacturer's original USB-C power supply for the same time. The long answer is yes for modern laptops, and maybe for older (1990s-early 2000s laptops) and involves going into the different battery technologies used in consumer electronics devices.
Another common question is if it is possible to use the docking station but to disable powering and charging the computer. When a modern notebook computer runs on battery power it will often set the system to a reduced power state which may impact performance, or connected devices and we recommend always powering the computer when using a desktop docking station. For all of our docking stations that provide power to the host computer this will not affect the lifespan of the computer's battery.
Modern Laptop Batteries: Lithium-Ion
Lithium-ion (li-ion) batteries are found in a wide range of consumer electronics from notebook computers and cell phones, to electric cars, power tools, and wearable electronics like wireless earbuds. Li-ion offers fast charging, high-current discharging, fairly long service live compared to other rechargeable battery technologies and are relatively inexpensive.
The life-span of a rechargeable battery depends on many factors including age, temperature history, charging patterns, the chemical composition of the specific battery, and usage. For example batteries stored at 100% charge will degrade faster than batteries stored at 50% charge, this is why most consumer electronics devices arrive from the manufacturer with between 25% to 75% charge.
Lithium-ion batteries are consumable components, however in most modern computers, cell phones, and tablets these are not user serviceable components. To help maintain the battery all modern computers and most consumer electronics will include battery charge and protection circuits. These can be fairly simple, charging up the battery at preset rates depending on the charge level to help maintain the battery life, or complex software controlled charging that monitors battery temperature, voltage and current draw to maintain the fastest charging while maintaining the battery longevity.
Modern notebook computers can be left connected to the original power cable or a docking station with charging capability for extended periods, and do not benefit from regular discharge/recharge cycles. Our docking stations with charging capability rely on USB Type-C Power Delivery to power and charge compatible computers. USB Type-C Power Delivery is a negotiated charging protocol between the host computer and the docking station or USB Type-C power supply, this allows the computer to draw only the power it requires, and even select the best voltage level for powering the computer. In combination with a computer's built-in battery charging controller the computer is capable of maintaining the battery's optimal state even when left connected to a power source for an extended period of time.
Legacy Laptop Batteries: NiCad and NiMH
Older laptops, from the 1990s and some early 2000s, as well as some consumer electronics, and most rechargeable AA or AAA battery replacements use Nickel-Cadmium (NiCad) or Nickel-Metal Hydride (NiMH) batteries. These batteries are slower to charge and discharge than li-ion batteries, and require very simple charge controllers, and in some cases can even be trickle-charged ( very low-current continuous charging ) if desired.
These batteries generally don't have smart charging controllers and to prolong the life of the battery required "training" or fully discharging and recharging the battery every so often. Many laptop manufacturers recommended fully charging and discharging a new laptop 2-3 times to train the battery, this is not necessary with modern laptops.
Conclusion
Modern notebook batteries are managed by the computer's built-in battery charging circuit, and require little to no user intervention to maintain optimal battery health. It does not harm the battery to leave the computer connected to an external power supply, so long as the computer is being used regularly. If the computer is to be stored for a prolonged period then discharging the battery to between 50-75% can help to maintain the battery life.
Batteries are consumable components and degrade over time, however modern notebook computers can extend the battery life generally to meet or exceed the life of the computer's other electronic components.
When the TBT4-UDX1 is connected to an electrical power source and powered on, there will be a small solid green power indicator light present on the front of the unit.
When the TBT4-UDX1 is connected to a compatible host computer, there will be a small solid blue host connection indicator light present on the front of the unit.
The TBT4-UDX1 can provide up to 96W of power to charge a compatible host computer.
The TBT4-UDX1 has two downstream Thunderbolt ports. Each time a device is connected to one of these ports, the amount of power provided to the host computer is lowered by 15W.
For example, if there is one device connected to a downstream Thunderbolt port, the total amount of power provided to the host will be 81W.
If there are two devices connected to both downstream Thunderbolt ports, the total amount of power provided to the host will be 66W.
The TBT4-UDX1 is a Thunderbolt 4 docking station based on the Intel Goshen Ridge chipset. The display output capabilities of the TBT4-UDX1 are ultimately determined by the display output capabilities of the host system.
Thunderbolt 4 host system:
When the TBT4-UDX1 is connected to a computer with a Thunderbolt 4 port, the maximum number of displays that can be connected to the docking station is two.
The TBT4-UDX1 has a built-in HDMI video output port, and two downstream Thunderbolt ports.
We include in the box with the TBT4-UDX1 a Plugable USB Type-C to HDMI adapter that can be connected to one of the docking stations downstream Thunderbolt ports.
The video outputs via the TBT4-UDX1 are provided on a ‘first come, first served’ basis. To expand further, if the dock’s built-in HDMI video output is in use, you can connect one additional display via a USB Type-C to video adapter.
If there are two USB Type-C video adapters connected to the dock’s downstream Thunderbolt ports, then the HDMI video output will not function.
Thunderbolt 3 host system:
Manufacturers have discretion when designing their Thunderbolt 3 systems in regard to how many displays are supported via a single Thunderbolt 3 port. Some Thunderbolt 3 systems support two displays, while other Thunderbolt 3 systems will only support one display.
The same ‘first come, first served’ process described previously within the ‘Thunderbolt 4 host system’ section will still apply if the host system supports two displays.
USB Type-C host system:
Host systems with only a USB Type-C port will be limited to a maximum of one display. This display can be connected to either the dock’s built-in HDMI video output port, or via the included USB Type-C to HDMI adapter.
The TBT4-UDX1 has one full-size Secure Digital (SD) card reader slot located on the front of the unit. The SD card slot supports the SD 4.0 specification, and the UHS-II standard.
The SD card reader utilizes a ‘friction’ mechanism in order to retain the SD card. To insert a SD card, simply insert the card into the slot until the card stops. The card will remain partially exposed when fully seated. To remove the card, simply pull the card from the slot (note, please be sure to eject the card from within the host operating system when doing so).
The TBT4-UDX1 has a power button located on the front of the unit. When the unit is connected to an electrical power source, the dock will power on automatically.
The unit can be manually powered off by pressing the power button once. After the unit is manually powered off, it can be manually powered back on by pressing the power button once.
You can then connect many different types of Thunderbolt and USB-C devices to the two ‘downstream’ Thunderbolt/USB-C ports on the back of the dock. The type of functionality provided by the two ports on the back of the dock is ultimately determined by the capabilities of the host computer.
To put that another way, if the host computer has Thunderbolt 4 technology built-in, then both ports on the back of the dock will function as Thunderbolt 4 ports.
If the host computer has USB-C technology built-in, then both ports on the back of the dock will function as USB-C ports.
If the host computer has Thunderbolt 3 technology built-in, then both ports on the back of the dock will function as Thunderbolt 3 ports***
*** Please note, the specifications of a Thunderbolt 3 host system can have an impact on the level of functionality of the dock’s downstream ports ***
When a Thunderbolt 3 host system that has:
A. An Intel Titan Ridge Thunderbolt host controller B. A DCH variant of the Thunderbolt host controller driver higher than version 1.41.613.1 installed C. An internal Thunderbolt NVM firmware version of 41 or higher
Is connected to the dock, then both downstream ports will function as Thunderbolt 3 ports.
When a Thunderbolt 3 host system that has:
A. An Intel Alpine Ridge Thunderbolt host controller B. A DCH variant of the Thunderbolt host controller driver installed
Is connected to the dock, then one downstream port will function as a Thunderbolt 3 port, and the other port will function as a USB Type-C port.
The TBT4-UDX1 has a wired Ethernet network port based on the Realtek RTL8156B chipset. The Ethernet port can support up to 2.5Gbps Ethernet when connected to compatible 2.5Gbps Ethernet network infrastructure (both the Ethernet switch and Ethernet cables in use must support 2.5Gbps operation).
It's not uncommon for users to notice a certain level of heat generation from electronics and by extension, Plugable products during operation. In this knowledge base article, we'll explore the reasons behind this heat generation and why it is considered a normal experience within reasonable limits.
Electronics, by their nature, generate heat during operation. This is primarily a result of the electrical current flowing through various components, such as integrated circuits, transistors, and other electronic elements. As Plugable products are designed to efficiently process and transfer data (among other functionality), some level of heat generation is inherent.
Factors Influencing Heat Generation:
Power Consumption: The power consumption of a device directly influences the amount of heat it generates. Higher power usage, especially during data transfer or charging processes, can lead to increased heat.
Enclosure Design: The design of the product's enclosure and its ability to dissipate heat play a crucial role. Adequate ventilation and heat sinks are often incorporated to manage and disperse generated heat effectively. This is evident in our TBT3-UDZ and TBT4-UDZ designs. The metal case in these docks are designed to function as a heatsink with thermal pads placed throughout the enclosure. This allows heat dissipation from inside to the outside, but will also make it feel as if the device is “too hot”.
Ambient Temperature: The external environment may also play a role. Higher ambient temperatures can contribute to increased perceived heat from the product. This means that summer temperatures may increase the heat generation of not just Plugable products, but many other electronic devices.
Normal Heat Levels: While it is normal for electronic devices to generate heat, Plugable products are engineered to operate within safe temperature ranges. We conduct rigorous testing to ensure that the heat generated during normal operation falls within industry-standard safety parameters. While not all products are or need to be UL certified, we try to go by UL guidelines for thermal readings. The UL threshold is 77C/170.6F, and we aim for around 71C/160F.
Tips for Users:
Ventilation: Ensure that Plugable products have sufficient ventilation around them. Avoid placing them in enclosed spaces where heat dissipation may be impeded.
Usage Patterns: Intensive tasks such as high-speed data transfer or charging multiple devices simultaneously may result in increased heat generation. This is generally normal but may be more noticeable in such scenarios.
Accessories: A number of our devices will allow for the connection of USB accessories and as such, these will require power. If too many “power-hungry” devices are connected, this will cause the device to run much hotter than expected. Be sure to keep in mind the power limits of your dock/device.
In conclusion, experiencing heat from Plugable products is a normal aspect of their operation. Users can rest assured that we prioritize the safety and efficiency of our devices. By understanding the factors influencing heat generation and following simple usage guidelines, users can make the most of their Plugable products while ensuring a reliable and efficient user experience.
The Windows Firewall may block some networking features when the local network is not set to Private. This article will describe the process for setting the local network, either wired Ethernet or Wi-Fi to be a Private network.
Windows 11
1 - Connect the computer to the network, either wired or wireless
2 - Open the Windows Settings - right-click on the Start Menu and select “Settings” from the pop-up menu
3 - On the left column select “Network & internet”
For Wired Networks
4 - Select the “Ethernet” option
5 - The connected network should be expanded, if not click on “Network Connected" to expand the section
6 - Select the “Network profile type” either “Public network” or “Private network” to suite your needs
For Wi-Fi Networks
4 - Select the “Wi-Fi” option
5 - Select your Wi-Fi network name “properties”
6 - Select the “Network profile type” either “Public network” or “Private network” to suite your needs
Windows 10
1 - Connect the computer to the network, either wired or wireless
2 - Open the Windows Settings - right-click on the Start Menu and select “Settings” from the pop-up menu
3 - Select “Network & Internet” fro the bottom section
4 - Select the “Ethernet” option from the left pane
5 - Select the “Connected” network from the right pane
6 - Select the “Network profile type” either “Public network” or “Private network” to suite your needs
Windows PowerShell
If the option does not show up in the Windows Settings GUI, or if you prefer to use the terminal.
1 - Open a new terminal: Right-click on the Start Menu and select “Terminal”
2 - Run the following command to list the available networks
With the release of Apple’s M3 CPU chips and the Sonoma 14.6 update your base MacBook Air and MacBook Pro systems with M3 chips can now host two external displays natively in clamshell mode. This guide will walk you through the process of setting up and using two external displays with the lid closed on your MacBook Air or MacBook Pro equipped with an Apple M3 chip.
Requirements
Before getting started, ensure you have the following:
MacBook Air or MacBook Pro with an Apple M3 chip.
macOS Sonoma 14.3 or later for an M3 MacBook Air or macOS Sonoma 14.6 or later for an M3 MacBook Pro.
Two external displays with compatible video inputs (e.g., HDMI, DisplayPort, USB-C).
A dock or graphics adapter can be used as well.
External keyboard and mouse (wired or wireless).
Power adapter or power source for your MacBook
A docking station that provides adequate charge can be used in place of the native power adapter, be sure to check the wattage your dock provides.
Steps to Set Up Dual External Displays with the Lid Closed
1. Set Up Your External Keyboard and Mouse
If you’re using a wired keyboard and mouse, connect them directly to your MacBook or Plugable dock.
For wireless peripherals, ensure they are paired with your MacBook and functioning properly.
An AC adapter/power cable of some kind will also need to be connected for clamshell mode to function properly. This adapter can be one from a docking station or the included Apple adapter.
2. Connect Your Displays
Connect the first external display to your MacBook using the appropriate cable (e.g., HDMI, DisplayPort, USB-C)
Close your laptop’s lid.
Connect the second external display using a similar method.
Ensure both displays are powered on and set to the correct input source.
3. Configure Display Settings
Open System Settings on your MacBook.
Go to Displays.
You should see both external displays listed. Arrange them according to your preference by dragging the display icons.
Adjust the resolution, refresh rate, and other settings as needed.
4. Enable "Clamshell Mode" (Lid Closed Mode)
With your external displays connected and set up, close the lid of your MacBook.
Your MacBook will automatically switch to "Clamshell Mode," where the internal display turns off, and the external displays become your primary screens.
Ensure your MacBook is connected to a power source to prevent it from entering sleep mode.
5. Check the Display Arrangement
With the lid closed, check that the external displays are functioning as expected.
If necessary, re-open the Displays settings to adjust the arrangement, resolution, or other preferences.
Troubleshooting Tips
No Display on External Monitors: If the external displays are not showing anything, open the lid of your MacBook and check the connections.
MacBook Sleeps When Lid Is Closed: Make sure your MacBook is connected to a power adapter. Clamshell Mode requires the MacBook to be plugged into an external power source.
Performance Issues: If you experience lag or performance drops, try lowering the resolution or refresh rate of the external displays.
Thunderbolt Dock Users
With these steps, one can use Plugable Thunderbolt docks to enjoy a dual-display setup without the need for additional software installation. The dock leverages the native capabilities of the MacBook Air M3 and MacBook Pro M3, providing a straightforward and efficient solution for expanding your workspace with additional USB ports, audio, and ethernet (as well as the dual displays).
Additional Resources
If you should need any assistance with your setup, please feel free to reach out to our support team at support@plugable.com.
Ethernet technology has come a long way since its inception in the late 1970s when early Ethernet operated at 10 Mbps, which was considered fast for its time. As digital demands increased, so did the need for faster data transfer speeds, leading to the introduction of Fast Ethernet (100 Mbps) and eventually Gigabit Ethernet ( 1 Gbps ), which has been the standard for home and office networking for over 20 years. Over these years, Ethernet continued to evolve, with standards being developed to handle even higher speeds but most often being isolated to the server room, and cloud computing. Today, technologies like 2.5 Gbps and 5 Gbps Ethernet have developed from 10 Gbps Ethernet, catering to modern high-bandwidth applications in both home and office environments. These advancements make it easier than ever for users to connect and transfer data at speeds that support the demands of video streaming, gaming, and extensive network tasks with higher reliability and lower latency than WiFi.
Upgrading a whole network from Gigabit to 2.5Gbps or faster can be costly and time consuming, but it doesn’t have to be done all at once. We have released both 2.5Gbps and soon 5Gbps USB Ethernet adapters that can be used with both notebook computers and desktops to provide up to five times faster Ethernet speeds than the built-in network controller, without having to install any new PCIe cards. Both of our high-speed Ethernet offerings are backwards compatible with current Gigabit Ethernet and in many cases can use the same network cables, however we do recommend replacing Category 5 and Category 5e cables with at least Category 6a or Category 7 cables to ensure future compatibility with both 5Gbps and 10Gbps Ethernet. Desktop 2.5Gbps and 5Gbps Ethernet switches are also coming down in price and can be used to quickly upgrade the network throughput between nearby computers.
As you make the upgrade process there are some steps that can be taken to ensure the network throughput is maximized between the 2.5Gbps or faster computers.
Maximizing 2.5Gbps Ethernet Performance
Maximizing the performance of a 2.5Gbps Ethernet network can enhance both speed and reliability, especially for power users who value efficiency and seamless connectivity in a busy IT environment or at home for the fastest home media center. Here are some best practices for small 2.5Gbps and 5Gbps network setups:
Upgrade Network Infrastructure for Compatibility
Switches and Routers: Ensure your network infrastructure, particularly switches and routers, supports 2.5Gbps or 5Gbps Ethernet. Many older devices are limited to 1Gbps, which will bottleneck the system.
This is most important between the computers that need the higher speed, if you have internet speed at or below 1Gbps then upgrading the router will not improve performance, so long as all computers that need faster local area network access are connected to the same 2.5Gbps or faster Ethernet switches.
Cable Quality: Use high-quality Cat 6a cables or better. While 2.5Gbps is designed to work with Cat 5e Ethernet cables, at least for short distances, for longer runs and to ensure the best performance Cat 6, 6a, or Cat 7 are recommended for 5Gbps networks.
Optimize Device Connections and Settings
NIC Configuration: Adjust your network interface card (NIC) settings to ensure optimal performance. This may involve tweaking parameters such as jumbo frames or flow control for maximum efficiency.
Ethernet data frames with more than 1500 bytes of data are called “jumbo frames”. Setting a larger frame size packs more data into each frame and can potentially reduce the CPU overhead, however to function it must be enabled on both endpoints and supported by all networking hardware in between. For most users there will be no noticeable difference in network performance, however in some specific cases like when a home server is transcoding and streaming video it can help to reduce the CPU overhead of the entire process. This can best be enabled on short point-to-point networks rather than sprawling networks, as packet loss with jumbo frames enabled causes significantly worse slowdowns than with standard frame sizes.
Flow control allows for the receiving system to transmit a pause request to the transmitting system to prevent data loss. This is necessary when multiple computers are communicating to the same server as there is generally not enough bandwidth to service all requests simultaneously, however it can be disabled in a point-to-point network setup where both computers are directly connected and both computers can handle full-speed data throughput. QoS - Quality of Service offers an alternative to Flow Control but requires significantly more setup often including managed switches and may not be an effective choice for the home and small office networks.
Driver and Firmware Updates: Keep all drivers and firmware updated for your network adapters, switches, and routers. This reduces potential compatibility issues and improves performance. Firmware updates are also important for maintaining network security, vulnerabilities in router firmware have been historically exploited to create network back doors, to exfiltrate data, as well as creating bot-nets for DDoS - Dedicated Denial of Service attacks on websites.
Drivers for Plugable devices can be found on our product pages, under the "Downloads" tab.
Consider Network Segmentation
For a network with mixed-speed devices (1Gb, 2.5Gbps, 5Gbps and 10Gbps), segmenting traffic can prevent slower devices from dragging down performance. This can be done physically by using gigabit Ethernet switches separate from 2.5Gbps or 5Gbps switches then bridging the switches together, or virtually by setting up virtual LANs (VLANs) with a managed Ethernet switch. VLANs can help allocate 2.5Gbps and 5Gbps connections exclusively for high-bandwidth tasks while lower speed devices can utilize secondary gigabit Ethernet ports on the server or client computers.
Leverage Multi-Gig Capable Devices for Key Applications
Identify the devices that will benefit the most from 2.5Gbps and faster connections, such as NAS - Network Attached Storage systems with integrated 2.5Gbps or 5Gbps Ethernet, high-performance workstations or desktop replacement notebooks with USB Ethernet adapters, or servers with multi-port bonded Ethernet controllers handling large data transfers. Connect these devices directly to a switch that can take advantage of the higher network throughput to ensure they receive the best performance possible.
Future-Proofing with 2.5Gbps-capable or faster Docking Stations and USB Ethernet Adapters
Many Plugable docking stations now support 2.5Gbps Ethernet, which could be ideal for enhancing productivity for hybrid work setups, at home, or in the classroom by enabling high-speed, wired connectivity. Plugable’s docks also simplify integration across Windows and Chrome OS devices, which can be especially helpful in mixed-device environments.
USB Ethernet Adapters
2.5Gbps USB 3 Ethernet Adapter ( https://plugable.com/products/usbc-e2500 )
5Gbps USB 10Gbps Ethernet Adapter ( https://plugable.com/products/usbc-e5000 )
1Gbps USB 3.0 Standard-A and Type-C Ethernet Adapter ( https://plugable.com/products/usb3-e1000 https://plugable.com/products/ubsc-e1000 )
Thunderbolt and USB4 docking stations
USB4 Dual 4K Docking Station ( https://plugable.com/products/ud-4vpd )
Thunderbolt 4 Quad Display Docking Station ( https://plugable.com/products/tbt4-udz )
Thunderbolt 4 and USB4 HDMI Docking Station ( https://plugable.com/products/tbt4-udx1 )
Many modern displays can support above the default 60Hz refresh rate, however this may need to be manually set within Windows 11. Please note, not all computers, graphics adapters, and docking stations can support all resolutions and refresh rates.
Setting the Display Refresh Rate in Windows 11
1. Right-click on the desktop and select Display Settings from the drop-down menu
2. Scroll down to the Related settings subsection and select Advanced display
3. At the top of the Advanced display window, select the external display from the drop-down menu
4. From the Choose a refresh rate drop-down menu select the desired refresh rate
Refresh Rate Limitations
With Windows 24H2 and newer, dynamic refresh rates are supported, this allows the system to adjust the display refresh rate to save power, up to the selected refresh rate. As a consequence of this new mode, when selecting the display refresh rate you may see an asterisk. This indicates that selecting the specific refresh rate may reduce the display resolution or image quality in order to prioritize the refresh rate. This exposes the refresh rate option from the display even if the display cable or computer is incapable of supporting that refresh rate at the native resolution and is the intended behavior per Microsoft. [1]
In the screenshot below the left side shows the 4K 120Hz capable display limited to 60Hz refresh rate without asterisks, and on the right the same display after setting the refresh rate to “120 Hz*”, the “Desktop mode” resolution has been reduced to 2560 x 1440 (1440p) instead of 3840 x 2160 (4K UHD). Unlike when using the display scaling option this also causes a reduction in image quality. On the right side asterisks are no longer shown in the refresh rate list. Setting the refresh rate back to 60Hz does not change the resolution, you will have to go back one page and set the resolution manually.
References
[1] Windows Insider description of new behavior (https://blogs.windows.com/windows-insider/2023/08/31/announcing-windows-11-insider-preview-build-25941-canary-channel/)
USB-C Power Delivery (PD) is negotiated between the power-sourcing equipment (e.g., a dock or multiport hub) and the connected host device. During this negotiation, the device offering power communicates its capabilities, and the host determines whether it can accept the power. If the host does not support Power Delivery, no power will be sent to the computer over the USB-C connection. This will allow you to take advantage of other capabilities such as data transfer or video output without risking damage to the computer.
Extra displays can be added to your docking station by using USB graphics adapters. This allows you to expand your workspace beyond the number of displays natively supported by your dock or computer.
Here’s how it works:
Ensure your dock has open USB-A or USB-C ports to connect the USB graphics adapter(s).
Select a Plugable USB graphics adapter compatible with your operating system and monitor specifications. Feel free to contact Plugable support (support@plugable.com) for assistance in selecting the appropriate adapter for your setup.
Download and install the driver from the "Downloads" section of the product page for the USB graphics adapter on Plugable's website.
Plug the adapter into an available USB port on your docking station.
Use an appropriate video cable (e.g., HDMI, DisplayPort) to connect the adapter to your monitor.
Important Considerations:
Windows supports up to 8 DisplayLink/SiliconMotion-based monitors.
macOS has a hard limit of 4 DisplayLink/SiliconMotion-based monitors.
USB graphics adapters use bandwidth and system resources. Connecting multiple adapters can reduce performance.
One helpful way to identify your ethernet link rate speed is through the System Settings app in macOS. This can help us identify if your Plugable ethernet adapter is negotiating either 1Gbps or 2.5Gbps network speeds. Some routers have a mix of 1Gbps or 2.5Gbps ports, and in the macOS System Settings this will be shown in the Speed field.
In this example, we will be analyzing our USBC-E2500, which is a 2.5Gbps ethernet adapter. This method applies to all of our ethernet adapters, such as:
Navigate to the Network section, select the entry named “USB 10/100/1G/2.5G LAN” with the Green - Connected icon. Expand the Details button, and go to Hardware.
In the field that says Speed, you should see 2500Base-T if the ethernet adapter is connected to a 2.5G ethernet LAN port on your router. If you see 1000Base-T, this means the adapter is connected to a 1G ethernet LAN port. If you are expecting faster network speeds, please see your router's documentation on its multi-gig LAN port.
At Plugable, we rigorously test our docking stations with the included accessories to ensure they work seamlessly together. One key reason for using the included cable is that not all USB Type-C cables on the market support the same features. Therefore we strongly recommend using the USB Type-C or Thunderbolt cable that comes with your Plugable dock for best results.
Understanding the differences between charging and data cables is essential to fully enable your new docking station, or if you are ever in need of a replacement or longer cable for your docking station. Let’s break it down.
USB Type-C Cables: Charging vs. Data
USB Type-C cables may look identical, but their capabilities can vary significantly. Unfortunately, the USB specifications do not require cables to be clearly labeled, which can make identifying the right cable a challenge.
There are two main categories:
USB Type-C Charging Cables
Charging cables are among the most common Type-C cables available. They typically support: ✔ USB 2.0 data (up to 480Mbps) ✔ USB Power Delivery for charging devices
These cables are often included with smartphones, tablets, and some laptops. They are also frequently sold specifically for charging purposes. However, they lack the necessary conductors for high-speed data transfer and video output.
Fully Featured USB Type-C Cables
Fully featured USB Type-C cables offer full functionality and are required for docking stations. The cables we include with our USB Type-C docks support: ✔ USB4 or USB 3.0/3.1 data (5Gbps or faster) ✔ USB 2.0 data ✔ USB Power Delivery ✔ USB Type-C DisplayPort Alternate Mode for video output
These cables ensure full compatibility with our docking stations, allowing for both high-speed data transfer and external display support.
Thunderbolt Data Cables
Thunderbolt cables are a specialized subset of USB Type-C data cables. They are Intel-certified and typically marked with the Thunderbolt logo (⚡).
✔ Interchangeable with USB Type-C data cables when using USB 3.x devices ✔ Required for Thunderbolt devices to ensure proper functionality
If you're using a Thunderbolt docking station or device, a certified Thunderbolt cable is essential for maximum performance.
What Makes These Cables Different?
The key difference lies in the internal wiring:
🚫 Charging cables lack the conductors required for high-speed data (USB 5Gbps or higher) and video output. Even if a device supports USB Type-C DisplayPort Alternate Mode, a charging cable won’t transmit video.
✅ Data cables include additional wiring to support higher data rates, video output, and greater flexibility in bandwidth allocation.
How Can I Tell the Difference?
🔎 Charging cables are generally thinner and may have smaller connector grips, as they often lack electronic markers. They are typically advertised as:
"Charging cable"
"480Mbps data rate"
Advertised primarily for phones and tablets, not laptops
🔎 Data cables are usually thicker and slightly more expensive due to their additional complexity. Look for statements such as:
"USB 3.0/3.1," "USB4," or "Thunderbolt"
"5Gbps" or faster data rates
Mention of video support for use with external displays
⚠ Cable Length Matters! Fully featured data cables are typically limited to 1 meter (3.3 feet) to comply with USB Type-C specifications. Charging cables, on the other hand, can be much longer.
Need a Longer or Replacement Cable?
If you need a replacement or a longer cable for your USB Type-C or Thunderbolt docking station, consider these options:
Plugable does not officially support automatic or automated MAC address pass through functionality from the host computer with any of our currently available docking station products.
As of this writing, the only current exception is the upcoming UD-7400PD docking station → LINK and we speak to its capabilities in this regard here → LINK
However, when our docking station products are used within a Windows environment such behavior can be approximated by other means. The methods to do so and their complexity can vary depending upon the Ethernet network technology on which the dock is based.
To be clear, Plugable does not officially support these approximated solutions. However, we wanted to mention them should they prove helpful to others.
With that said, Plugable docking stations will vary in regard to the Ethernet network chipset used within the product. For general reference, the specific Ethernet chipset used within the product will be listed within the 'Specifications' tab of the docking station's product page.
For example, here are the specifications for the Plugable UD-6950Z docking station which is based on DisplayLink technology, which also provides the Ethernet network chipset functionality.
Note, all Plugable docking station products based on DisplayLink technology will have the DisplayLink logo printed on the product. For general reference, we have a list of all of our DisplayLink-based docking stations available here --> LINK
A DisplayLink-based Ethernet adapter can be configured to use a 'virtual' MAC address that is manually configured within the Windows Device Manager via the adapter's 'Advanced' settings tab, specifically the 'MAC Address' field.
Manually entering a hexadecimal value for the MAC Address field will override the MAC address stored in the Ethernet chipset within the docking station product (in so far as it is presented to the Windows operating system).
To be clear, this only affects the current Windows installation. This does NOT change the Ethernet MAC address stored within the dock itself.
Further to this, Synaptics (the separate company from Plugable who created the DisplayLink technology and also developed the software), have additional options available for configuring a DisplayLink-based MAC address. Some of these options provide a certain level of automation, while others require manual inputs.
DisplayLink outlines the available options within this knowledge base article --> LINK which for general reference is part of their broader 'Corporate Deployment' knowledge base category --> LINK
To be clear, since DisplayLink develops the software DisplayLink also supports the Corporate Deployment options directly.
Should additional assistance be required in regard to the Corporate Deployment options, please contact DisplayLink directly for further assistance --> LINK
Plugable also offers docking station products based on a variety of Realtek, Intel, and ASIX Ethernet network chipsets. For those products, the only option available is to manually configure a 'virtual' MAC address in a similar manner to what we described above.
However, please note that the description of the option to do so within Device Manager will vary. For example, for Intel Ethernet chipsets the option will be called, 'Locally Administered Address'. When using Realtek Ethernet chipsets the option will be called, 'Network Address'.