Yeah, the problem I have is I have 4 machines I need to control with this; a hardcore workstation, a dually fileserver, a Linux server and a DVR. Some have DVI cards, most don't, and I have not had any luck running my USB mouse with a PS/2-USB adapter. I HATE having more than one keyboard and mouse, but it looks like that might be my solution, else buy a $250 DVI/USB switch.