Just received our UD-3900 in hopes of setting up a home desktop situation for my wife and I to share with our laptops. The display seems to be working fine but our wireless Logitech mouse and keyboard aren’t working when the dongles are plugged in to any of the USB ports. I read some of other peoples issues and tried the extension hub and that doesn’t work either. They do work if I plug them directly into the computer, but at that point i’m using two cables to connect the laptops and could just use the hdmi port and one usb, eliminating the need for the UD-3900. Thanks for the help, hopefully we can figure out a solution!