Plugable USB-C Phone Cube Docking Station

Product Description

Meet Plugable’s first phone dock, the UD-CUBE-15W. Transform your Samsung DeX capable device into a full-fledged desktop PC with the mobile UD-CUBE-15W that’s smaller than your smartphone. With the Phone Cube, drive an external HDMI display, enjoy access to three USB ports for your USB peripherals such as your keyboard and mouse, maintain a gigabit wired Ethernet connection, while keeping your phone charged with 15W of power — all through a single high-speed USB-C connection.

A compatible phone connects to the Phone Cube via an included detachable USB-C cable, rather than being directly affixed onto the docking station. This means that you aren’t limited to navigating through the phone while it’s stuck sitting on a dock. Rather, unlock further potential with your setup by being able to hold and pick up the phone while you utilize your desktop experience to navigate through your favorite apps.

On top of that, a detachable USB-C cable also means you don’t have to worry about your phone case preventing a proper fit with the USB-C connector — no matter how bulky and protective your case may be.


  • Requires a Samsung DeX compatible device with a USB 3.1 Type-C port; Compatible with devices such as the Samsung Galaxy S9, S9 Plus, S8, S8 Plus, S10, Note 9 and Tab S4.
  • Compact size with detachable USB-C cable making it ideal for clutterless workstations while portable for travel
  • Three total USB Type-A ports; One USB 3.0 port and two USB 2.0 ports on the rear
  • Wired gigabit network connectivity via one RJ45 Ethernet port
  • Rapid Charging of the phone with up to 15W of power


Phone Model Compatibility Notes
Samsung Galaxy Note 9 Yes
Samsung Galaxy S9 / S9 Plus Yes
Samsung Galaxy Note 8 See notes
  • Must be updated to Android 9 “Pie” OS
  • Ethernet port may not work properly
Samsung Galaxy S8 / S8 Plus / S8 Active See notes
  • Must be updated to Android 9 “Pie” OS
  • Ethernet port may not work properly
Samsung Galaxy Tab S4 Yes
Samsung Galaxy Tab S5e Yes
Samsung Galaxy Tab S6 Yes
Samsung Galaxy S10 / S10 Plus Yes
Samsung Galaxy S10e Yes
Samsung Galaxy S10 5G Expected

The UD-CUBE-15W dock will also work with other non-Samsung DeX phones to mirror the phone display on the connected monitor, but please check with your smartphone’s manufacturer to determine if it supports video output from the phone’s USB-C port, as not all smartphones support this function.

Incompatible Devices and Setups

  1. Operating System (OS) – Samsung phones that are on Android 8 “Oreo” OS or lower are not supported. Please make sure to update to Android 9 “Pie” OS for DeX support.
  2. USB Type-C (USB-C) – Please note that the UD-CUBE-15W requires a USB-C port on the phone. The Phone Cube is not compatible with devices that use a micro USB or Lightning connection. Additionally, it is not possible to use USB-C based adapters to convert this connection to a phone.
  3. HDMI – DisplayPort monitors are not supported with the Phone Cube.

In the Box

  • UD-CUBE-15W Phone Dock
  • 1x USB-C to USB-C cable (91 cm / 36 in)
  • 1x Power Adapter (20W 5V/4A, UL60950-1)
  • 1x Quick Start Guide

Please note that an HDMI cable is not included with the Phone Cube.


A: DeX mode may not be the default setting when connecting to an HDMI monitor. However, you can easily switch to DeX by swiping down from the top of the screen, then selecting “Samsung DeX is available” tab.

A: Please look over the following points:

  1. Make sure that HDMI is selected as the video input for your HDMI monitor / TV
  2. If you’re seeing a mirror of the phone on the screen, please see the FAQ item above
  3. Make sure that the phone is not set in any of the following modes:
    • Maximum Power Saving mode
    • Safe mode
    • Emergency mode
    • Kids mode
    • Container Only mode (Knox-exclusive devices)
  4. If you are using a Samsung Galaxy S8, S8 Plus, or Note 8, please ensure that the phone is on Android 9 “Pie” OS
  5. Make sure that your monitor or TV supports HDCP (High-bandwidth Digital Content Protection)

If you continue to have issues, please contact us at

A: It’s possible to use a HDMI-to-DVI cable to connect from the Phone Cube to your display, but please be aware that Samsung DeX may not function properly. However, DisplayPort monitors are not supported.

A: Please be aware that it is up to the developer of the application to optimize their application for Samsung DeX. While Samsung does have an internal verification process for making sure applications are optimized and display properly through DeX, not all apps have been verified.

A: Please refer to the following guide by Samsung for changing the default speakers in Samsung DeX.

A: You’ll want to use the full screen feature provided by Game Launcher. To run these game applications in full screen, please perform the following:

  1. Navigate to Settings > Advanced features > Games > Game Launcher, and ensure it is toggled “On”
  2. Open Game Launcher in DeX mode, then select your game with the “Full screen” button enabled

A: No, the LED is powered on when it is connected to a power source and cannot be turned off unless this power source is removed.

A: Please keep in mind that DeX is a Samsung feature, and is driven through the connected smartphone — not the Phone Cube. The Phone Cube provides access to the DeX experience by displaying to an external monitor, but doesn’t directly control any of the DeX functions. If you’re running into any issues with DeX or have any questions, please refer to the Samsung DeX FAQ.

A: Modern Samsung phones are equipped with Samsung DeX which is what runs the desktop experience. Other smartphones currently do not have a similar features, so while our dock has the potential to work with other non-Samsung phones, it will likely only mirror the phone display on the connected monitor. Please check with your phone’s manufacturer to determine if it supports video output from the phone’s USB-C port.

A: As long as the USB-C port on the computer supports USB-C Alternate Mode (Alt Mode) video, then yes! Please check with your system manual to confirm this if you’re not sure.

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