Gefen's 4 x 1 DVI KVM DL switcher provides you with greater flexibility in integrating cross-platform computer equipment easily and without networking. It enables you to switch easily and reliably between any combination of four dual link or single link DVI computers using one dual link DVI-compliant display.The 4 x 1 DVIKVM DL Switcher supports USB 2.0 for USB keyboard/mouse and other high-speed peripherals. Audio is switched for each computer as well, allowing for the creation of multimedia desktop environments, and you can even choose between a Macintosh or PC keyboard/video/mouse combination. Switching can be controlled through the included IR remote, the front panel source selector button, or the built-in serial port using RS-232 serial communications.Simply plug your display, keyboard/mouse and audio peripherals directly into the 4 x 1 DVI KVM DL Switcher's outputs and connect the supplied cables to the four computers you want to control. Select the computer you want to work on using the remote that is supplied with the unit. Gefen EXT-DVIKVM-441DL KVM Switch is one of many KVM Modules available through Office Depot. Made by Gefen.