If you are having an issue with a peripheral connecting to your Dell Docking station please try the steps below to reset the dock.
1. Remove the dock USB-C or Thunderbolt cable from the computer.
2. Unplug AC power from the Dell Docking Station
3. Drain any remaining power to the dock by holding the power button for 30 seconds.
4. Plug AC power into the dock.
5. The dock LED on the power button should blink three (3) times.