The affordable OmniView E Series 4-Port KVM Switch from Belkin allows you to control up to four computers from one keyboard, video monitor, and mouse console. The E Series supports high-resolution display quality when used with coaxial VGA cabling. It is designed to work with your PS/2 platform, it reduces desktop clutter and provides a simple, reliable solution at a lower price. PRODUCT FEATURES: Enables control of 4 PS/2 computers from 1 keyboard, monitor, and mouse console; Delivers excellent display clarity; Switches easily with hot keys and manual push-button port selection; Requires no additional power supply.