Need a flexible, economical way to control up to four computers from one monitor, keyboard and mouse? Tripp Lite has the solution. Our B006-VUA4-K-R includes four KVM ports for connected computers, plus built-in audio jacks that allow for speaker and microphone audio to be shared among all connected computers. Also included is a built-in USB hub that allows devices like flash drives and printers to be shared among all connected computers. The B006-VUA4-K-R is compatible with both USB and PS/2 computers. This compact KVM switch can be placed on a desktop or shelf, and is also suitable 1U rack installation with included mounting hardware.