Gefen 4x4 DVI KVM Matrix - 4 x 4 - 4 x DVI-I Monitor, 4 x Type A USB - 1U - Rack-mountable

The 4x4 DVI KVM Matrix provides a simple, reliable and highly effective method of creating multiple computer workstations, with each workstation capable of accessing any one of the computers or sources at any time by remote control. You also have the option of setting up the four stations locally or extending them with a Gefen extender. When used with computers, USB and Audio Matrix control signals follow the DVI input for optimal control.