Determine if port is bad

I have a UD-3900
All of the sudden, one of monitors is not connecting to USB Pluggable Docking Station.
Have Lenovo Ryzen 7 laptop with Windows 11.
Connected HDMI cable directly to laptop and it worked.
When I connect same cable to HDMI port on Docking Station, there is no signal.
Please advise how to determine if port is faulty.


Hi Hilary,

Thank you for contacting Plugable! I am sorry to hear that your UD-3900 docking station is not functioning as expected, and would be happy to provide additional support.

I saw that you reached out to us directly via email ticket #397824, and would be happy to continue troubleshooting via that thread.

Thank you for giving us the chance to help!

Plugable Technologies

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