Thanks for posting! I’m sorry the Ethernet port isn’t working properly. I’d be happy to help.
You don’t mention which specific product you have but I am going to guess it is one of our docking stations. The first thing to check is the status of the lights on the Ethernet port on the dock itself. You should see both an amber and green light. If you do not see those lights the issue may be a faulty cable or you are connecting to a network device (usually older hubs) that only supports half-duplex communication. The Ethernet port in our dock only supports full duplex communication.
If you see the lights and know the cable is good (ideally swap with another just to be sure) the next step would be to ensure the drivers for the dock (including the Ethernet component) are installed properly. Please follow these steps:
Disconnect the dock from the computer and please remove the power cable from the dock so it turns off completely. Please keep it disconnected until the last step.
Uninstall the DisplayLink Core software from the Control Panel -> Programs and Features. Don’t worry if this fails, just move onto the next step
Download and run the DisplayLink cleaner tool, found here:
Once the Cleaner has been run, reboot (even if not prompted to)
Now download and run the 7.7 M4 DisplayLink software, found here:
Reboot, even if not prompted to
Once you’re back in Windows, reattach the power cable to the dock first. Once the dock is powered on, reconnect it to your PC which will trigger the final portion of the installation
Hopefully that helps. Let us know the results when you have time and we can go from there.