Troubleshooting Guide

No Video Output

Issue: Monitor is not displaying any video signal when connected via HDMI.

Solutions:

• Confirm your computer's USB-C port supports DisplayPort Alt Mode or Thunderbolt 3/4. Note: Not all USB-C ports support video.
• Ensure the UD-CUBE is powered using the included AC power adapter. The blue LED should be lit.
• Check that your HDMI cable is rated for HDMI 1.4 or higher and securely connected.
• Try a different HDMI cable or monitor to rule out a hardware fault.
• Restart your computer with the dock connected to force the display detection process.
• Open your operating system's Display Settings and use the manually detect display function to force detection.

USB Devices Not Detected

Issue: USB peripherals (keyboard, mouse, flash drive) connected to the dock are not recognized.

Solutions:

• Make sure the dock is powered with the included AC adapter.
• Disconnect and reconnect the USB-C cable to ensure a firm connection on both ends.
• Try a different USB port on the dock.
• Reboot your computer with the dock connected.
• Test the USB devices directly on the laptop to confirm they're working properly.

Ethernet Not Working

Issue: Wired network connection is not available when connected via the dock's Ethernet port.

Solutions:

• Ensure the dock is powered and properly connected to the host via USB-C.
• Ensure that your Ethernet cable is securely connected to both your Plugable docking station and hub/router or network access point.
• Use a "known good" Ethernet cable or try using a different ethernet cable.
• Try connecting your ethernet cable to another source (e.g. laptop) to verify that you are able to acquire a network connection.
• If possible, try using another docking station unit (if available) to determine if the original docking station is the culprit.
• If your connection is still not working, try resetting your router or try using a different port on the router or if you are connected to a Hub or Switch try using a different port on the Hub or Switch.

Dock Not Powering On

Issue: The dock's blue LED does not turn on and no peripherals are working.

Solutions:

• Ensure the included AC power adapter is connected to both the wall and the dock.
• Try a different power outlet.
• Check for any visible damage to the power adapter or cable.
• If the LED does not light up after confirming the above, contact support.

Monitor Limited to Mirroring (Cannot Extend)

Issue: Only mirrored display is available; cannot extend desktop.

Solutions:

• Verify that you have your monitor set to "Extend" instead of Duplicate or Mirror in your Display Settings.

General Tips

• Always use the included USB-C cable and power adapter for best results.
• Avoid using USB-C hubs, extenders, or adapters between the host and the dock.
• If you encounter intermittent behavior, reboot your system and reconnect everything directly.
• If issues persist, please contact Plugable Support at support@plugable.com for further assistance.

FAQ