Gefen CAT5-1000 KVM Extender Extends any VGA display, USB 1.1, Audio, and RS-232 Communications protocols up to 330 feet (100 meters) away from a computer or other source device. Supports video resolutions up to 1920x1200. Extends stereo Audio for Multimedia applications. Works with all CRT and LCD computer monitors as well as USB-equipped keyboards and mice (Mac or PC). Uses just one CAT-5e cable. Rack-Mountable for installation convenience. Upgraded model (EXT-CAT5-1500) is available which extends further (Up to 600 feet) while allowing fine tuning of video for exacting applications.