The Gefen Switch single link DVI, USB 2.0 & Audio between two computers. The ex-tend-it 2x1 DVIKVM SL Switcher allows you to easily switch between two cross-platform DVI computers using just one DVI display and USB 2.0 keyboard and mouse. It's referred to as single link DVI to differentiate it from dual link DVI. Single link describes the standard use of DVI, capable of resolutions up to 1920x1200; dual link DVI describes the use of all 24 pins of the DVI connector to achieve resolutions up to 3840x2400. USB 2.0, also known as hi-speed USB, is the next generation of USB capable of sending data significantly quicker than before. Stereo audio is routed through along with the video to the display. Audio, video and control signals are inchswitchedinch for each computer upon selection, providing you with an easy and effective method of accessing two computers from one workstation without the hassle of networking. High resolution digital video plus stereo audio is supported.