Plugable USB 3.0 Dual Display Adapter for Multiple Monitors with Gigabit Ethernet

USB3-3900DHE In Use


  • Provides SuperSpeed USB 3.0 (5 Gbps) link between computer to video and network.
  • Compatible with Windows 10, 8.1, 7, and XP (32-bit). Intel only (no Windows RT/ARM). Not for low-end Home Basic/Starter Windows installations. Not compatible with Mac and Linux at this time.
  • Backwards compatible with USB 2.0 (480Mbps) for PC
  • HDMI and DVI/VGA ports for two external monitors supports display resolutions up to 2560×1440* (HDMI) and DVI / VGA to 2048×1152 / 1920×1200.
  • *Note: 2560×1440 output only available when using a single HDMI display connected through the adapter. See additional details relating to 2560×1440 functionality in the FAQ below.
  • Network port offers wired Gigabit Ethernet connectivity (also 10/100 capable).
  • Graphics and networking managed by single a DisplayLink DL-3900 chipset.
  • USB Bus powered
  • Hot-Plug, add or remove additional displays without system reboot

Connect up to two additional monitors on your Windows PC with Hot-Plug capabilities and a gigabit Ethernet connection, all through a single SuperSpeed USB 3.0 port with the USB3-3900DHE Dual Head Graphics and Gigabit Ethernet Adapter for Windows-based computers.

With a graphics and networking chipset that has been selected and tested to ensure maximum quality, the USB3-3900DHE provides:


  • >An HDMI and a DVI port for connecting two external monitors and supports resolutions up to 2560×1440* (HDMI) and DVI / VGA to 2048×1152 / 1920×1200 (DVI-to-VGA adapter also included)
  • An RJ-45 Gigabit Ethernet network port (also supports 10/100 Ethernet)
  • A bus powered device (no power adapter needed)

Note: 2560×1440 output only available when using a single HDMI display connected through the adapter. See additional details relating to 2560×1440 functionality in the FAQ below.


Speed and Power
USB3-3900DHEPerformance is best when hooking up the USB3-3900DHE adapter to a USB 3.0 port on a PC, allowing SuperSpeed data-transfer rates of up to 5 gigabits per second between the computer and the adapters USB 3.0 components. Play full-motion video in 1080p on the monitors attached to the adapter video ports. Access your Gigabit Ethernet network through the adapter’s network adapter without bottlenecks. The USB3-3900DHE can be connected to a computer’s USB 2.0 port, though communications between the computer and the adapter will be no faster than the USB 2.0 maximum of 480 megabits per second.

The USB3-3900DHE is completely bus powered, meaning that this device is a simple plug and play device, no power supply needed.

This adapter will wake along with your PC from suspend and hibernation modes.

Integrated Chipsets
The heart of this adapter is its DisplayLink DL-3900 chipset, which manages dual graphics and Gigabit Ethernet functions. The integration of these functions on a single chipset means fewer internal components need to be bolted together, leading to increased compatibility and reliability overall. Drivers are installed automatically from Windows Update if an Internet connection is present when the adapter is first connected (a drivers CD also comes in the box).

You can extend or mirror your primary Windows desktop to a monitor connected to the USB3-3900DHE. With DisplayLink technology, graphics processing still is handled by connected computer’s central processor and graphics processor. The DisplayLink drivers on that PC compress and transmit pixels to the DL-3900 chipset, which decodes the data and displays it.

The USB3-3900DHE can be used in conjunction with any of Plugable’s other USB graphics adapters for adding extra monitors. Please note that USB graphics adapters not powered by DisplayLink technology cannot be used on your PC simultaneously with the USB3-3900DHE. Drivers for non-DisplayLink USB graphics adapters must be uninstalled from the PC.

Graphic illustrating moving a window between two monitors

Moving windows between monitors is an easy drag-and-drop action.

What’s in the Box
The Plugable USB3-3900DHE comes with a passive DVI-to-VGA port adapter, a quick-install guide, and a drivers CD.

Resolutions Supported

The hardware is capable of supporting nearly arbitrary resolutions, up to its limit of 2560x1440 (HDMI) / 1920x1200 (DVI). VESA standard and widescreen resolutions are supported by most software, including: 2560x1440 (HDMI Only), 1920×1080, 1600×1200, 1680×1050, 1440×900. 1400×1050, 1280×1024, 1280×768, 1280×720, 1152×864, 1024×768, 800×600, 640×480. For all supported resolutions (other than 2560x1440 which has a 50Hz refresh rate), the display is refreshed at 60Hz, and the hardware is capable of 16, and 32bpp color depths. Some operating systems require specific depths, like 32bpp for Windows Aero support.

Note: 2560×1440 output only available when using a single HDMI display connected through the adapter. See additional details relating to 2560×1440 functionality in the FAQ below.


Hardware Requirements

Dual Core Intel or AMD CPU, 2GHz or better with 2GB+ RAM. Windows GPU must be Intel, AMD, or Nvidia with WDDM drivers. (Most modern systems meet this requirement.)

Operating System and Driver Details

Drivers can be installed automatically via Windows Update with support for Windows 10, 8.1, 7, and XP. Not compatible with ARM-based Windows RT/Surface RT. Note that Microsoft limits multiple display support in Windows 7 “Starter” Edition to mirroring screens. Even though drivers are provided automatically, we recommend visiting the Plugable driver webpage for the most recent drivers and other information.

DisplayLink's Windows drivers make use of the main GPU for rendering, and require an Intel, nVidia, ATI/AMD primary graphics driver supporting WDDM to be installed. Most systems since Windows 7 satisfy this requirement.

Please note that USB graphics adapters or docking stations not powered by DisplayLink technology, such as Magic Control Technology (MCT), Samsung Central Station (SMSC), and Fresco Logic cannot be used on your system simultaneously with our DisplayLink-based products. Drivers for non-DisplayLink USB graphics adapters must be uninstalled from the host system before using our products The above list of 3rd-party technologies covers most known incompatibilities, but the same potential for incompatibility exists with any type of USB video device or screen mirroring/extension software. While it is impossible to create an exhaustive list of such software or devices, the following have also been found to be incompatible:

1. Samsung SideSync
2. Kramer VIA ConnectPro

Mac systems are not currently supported. However, significant progress has been made by both Apple and DisplayLink resolving interoperability issues. We will continue to evaluate compatibility and and update this section as things evolve.

Linux is not supported for this device.

Some touchscreens are compatible, it is dependent upon whether the touchscreen monitor software supports multiple monitor setups. Please contact your monitor manufacturer to determine if multiple monitor setups are supported.

HDMI TV Compatibility
The adapter supports HDMI through the 1.3 standard. To use a TV as a monitor via the adapter, the TV must support EDID, the extended display identification standard for communicating monitor capabilities to a PC. Many TVs that have a VGA port in addition to an HDMI port assume that computers will use VGA for connectivity rather than HDMI. In these cases, a VGA connection from the PC’s internal video card to the TV might provide the best results.

HDCP protected content not supported.

Performance Tuning
If you’re experiencing slowness or latency on your USB3-3900DHE connected display:

  • Make sure your adapter is connected to a USB 3.0 port (if available) on your computer.
  • If USB 3.0 is not available, play 3D games and videos on a display that isn’t connected via USB.
  • When all else fails, reduce your USB-connected monitor’s screen resolution via the Windows display control panel.

By reducing the amount of data that needs to be compressed and sent over USB, you’ll increase responsiveness.

 USB graphics devices, like the USB3-3900DHE, are “virtual” devices where much of the heavy lifting is done by the CPU, by hooking into the graphics stack. The DirectX APIs used by games assume direct hardware access (a PCIe graphics card).  DisplayLink’s drivers attempt to emulate as much of the functionality as possible, which is why some 3D functionality (like that needed for desktop and apps) works.

We don’t recommend running games with USB graphics, because this emulation cannot be perfect. And even without specific compatibility problems, performance will always be a challenge – the extra CPU work required for USB graphics will be a source of reduced frame rates and problems. Normal desktop and application use are fine because they don’t push the system as hard as 3D games do.

Common problems experienced when trying to run a game on a USB graphics adapter include:

  • Games not launching
  • Games crashing
  • Screen flickering
  • Screen going black

Leave your questions about this product here or contact us directly at Whether you’ve purchased the USB3-3900DHE and need support or you’re considering a purchase and would like help understanding this adapter’s features, we’re here to help.


Do Plugable USB docking stations and graphics adapters support Windows 10?
Windows 10 drivers are available for all of our USB docking stations and graphics adapters. As with any new operating system, Plugable recommends that users wait before upgrading any mission critical systems. For additional information on Plugable USB graphics devices and Windows 10, please check out our blog post covering things more in depth.

After a recent update, when I use Chrome on my Mac with a USB graphics device, the window looks distorted. Is there a workaround?
While we don't support our USB graphics devices on Mac, we have reproduced this behavior during internal testing. It appears there has been a regression in the current version of Chrome for OS X (Version 46) which causes graphical distortion when Chrome windows are in use on USB-attached monitors.

Until this issue is fixed in a future version of Chrome, the best current workaround is to disable hardware acceleration in the Chrome settings. To do so: Click the Chrome menu header -> Preferences -> Settings -> Show advanced settings -> Scroll down to "System" -> Uncheck "Use hardware acceleration when available".

To help make Google aware of the issue so they can properly prioritize fixing it, affected users can report the regression to Google using the built-in bug reporter: Preferences -> About -> Report an issue

2560×1440 Functionality
2560×1440 output is only available when a single HDMI monitor is connected to the adapter, and requires a “High Speed” HDMI cable. 2560×1440 mode will operate at a 50Hz refresh rate; all lower modes support 60Hz refresh rate. 2560×1440 output requires current DisplayLink drivers and attached monitor must natively support 2560×1440 via HDMI input. Please note that most monitors that support 2560×1600 do not support 2560×1440.

What does the blue or green LED  on the Plugable USB3-3900DHE indicate?
The blue LED indicates that the PlugableUSB3-3900DHE is being powered. It lights up blue if connected to USB3, and green if connected to USB2.

What do the green and amber LEDs on the Ethernet port on the Plugable USB3-3900DHE indicate?
The green link LED on the Ethernet port on the Plugable USB3-3900DHE is an indication that the Ethernet cable plugged into the port is live and it stays steady as long as the live cable is plugged in. The blinking amber activity LED is an indications that data is transferring through the port.  Both these LEDs will not light up when:

1) The drivers for the dock have not installed properly or is corrupted
2) The Ethernet Cable plugged in is not live or is faulty
3) The port has failed

When I plug an ethernet cable into the dock, none of the LEDs light up, and I do not get assigned a valid IP address. What could be causing this?
The ethernet controller in the USB3-3900DHE requires a full duplex connection. Half duplex connections are not supported.

Often, the issue is caused by older ethernet hubs and/or cabling that do not support full duplex connections.

Why does the “Display Color Calibration” tool in Windows seems to have no effect on the display(s) attached to my USB3-3900DHE?
The DisplayLink GPU does not support color calibration functionality. For environments that necessitate near-perfect color reproduction and calibration capabilities, a dedicated graphics card is recommended.

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