Reference:
CL5708M-ATA-XG
The CL5708 Slideaway™ LCD KVM Switch is a control unit that allows access to multiple computers from a single PS/2 or USB KVM (keyboard, video, and mouse) console. A single CL5708 can control up to 8 computers. As many as 31 additional KVM switches can be daisy-chained to the CL5708, so that up to 256 computers can all be controlled from a single KVM console.