Gefen's 4x1 DVI KVM 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 DVI (digital visual interface) computers using one DVI display. The 4x1 DVI KVM Switcher also 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 either the IR Remote, Front Panel Push Buttons, or the Contact Closure port.