Thank you for contacting Plugable support! Sorry to hear about this issue. I’d be more than happy to assist you.
Not all computers support the 4K output as it requires USB-C VESA DisplayPort Alternate Mode video output support. This can also be affected by the USB-C cable if you’re not using the cable that shipped with the dock. What make and model computer are you trying to use our dock with? Also can you verify that you’re using the cable that shipped with the dock?
For the keyboard and mouse not working, I’m unsure why this would have occurred after installing the DisplayLink drivers (these drivers are for the 2K HDMI, DVI, Ethernet, and audio, but shouldn’t affect USB operation or the 4K HDMI port). I’d recommend resetting the dock and seeing if that helps:
If you haven’t already done so, fully unplug the dock from all devices, power, and USB-C cable to the host computer. Wait about 30-60 seconds, then reconnect the power cable first, USB-C host cable next, and USB devices last. Sometimes a reset in this order can resolve this issue.
Please don’t hesitate to let us know of other questions.
Thanks again for contacting Plugable support and best wishes!
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