The Gefen 4x1 DVI DL DVI Switcher allows you to easily switch between four cross-platform dual link DVI computers using just one dual link DVI display, USB 2.0 keyboard and mouse. Dual link DVI uses all 24 pins of the DVI connector to achieve ultra high video resolutions up to 3840x2400. Video, USB, and Audio signals are "switched" for each computer upon selection using Discrete IR Remote and Serial RS-232, providing you with an easy and effective method of accessing two computers from one workstation without the hassle of networking. You simply connect your dual link DVI display and USB 2.0 keyboard/mouse to the Switcher"s outputs. Then you connect your computers" dual link DVI and USB ports to the Switcher"s inputs using the supplied cables. From there, you select the computer you want using the IR remote that comes with the unit or with any RS-232 remote control. It allows you to switch seamlessly between Macintosh or PC keyboard/video/mouse combinations. *Wired switching is also available via Parallel Discrete Contact Closure. Package Includes: 4x1 DVI DL Switcher, RMT-4IR, One 5V Power Supply, Four 6ft Dual Link DVI cables, Four 6ft USB 2.0 Cables.