Increase office versatility and control up to four computers from one keyboard, mouse and monitor. USB plug-and-play connectivity provides simple setup. Compatible with all major operating systems, most keyboards and mice. Bright LED display for monitoring connections and status. Superior video quality up to 2048 x 1536 dpi resolution. Connector/Port/Interface: PS/2; USB; VGA; For Use With: N/A; Number of Ports: 4; Connects Devices (From/To): 1 Keyboard/Monitor/Mouse to Multiple Computers.