I have today received my Plugable UD-ULTCDL.
I own a Dell XPS 15 9560 with windows 10. All of the latest drivers have been installed, including DisplayLink. BIOS is thunderbolt-enabled. When I plug in my Plugable dock to the laptop, the plugable dock rapidly restarts on and off endlessly. I can occasionally hear the pinging as windows detects and loses a new USB device. The external monitor flashes on and off endlessly. So do all connected USB devices and charging. I have tested every combination including:
Running the dock with a single mouse plugged in and no external video output.
Running the dock with a single external output and no USBs plugged in.
Bypassing the surge protector
Uninstalling and reinstalling DisplayLink drivers
Deleting registry keys to reset display options for windows
Plugging in the dock after fully uninstalling the DisplayLink drivers and restarting the computer (hoping Windows might have another driver pre installed)
Plugging in the dock with nothing attached to the dock (only the power cable and USB-C cable) - in this case the charging experienced rapid disconnect / reconnect cycles as I could witness on my taskbar
Unplugging the dock to allow power to deplete then plugging it back in to try again.
Checking BIOS version now, but I am confident it is up-to-date
Simply put, the dock currently will not work even to charge my laptop reliably.
The only function that works to my knowledge is USB charging of external devices, when the USB-C cable is not attached to the laptop. I suppose it is currently a very expensive USB charger.