The CS84U PS/2-USB KVM switch is a desktop control unit that allows users to access four computers from a single KVM console. In addition, CS84U comes with ATEN's Video Dyna Sync technology, which eliminates boot-up display problems & optimizes resolution. Setup is fast & easy; simply plug cables into their appropriate ports. There is no software to configure, no installation routines, & no incompatibility problems. Since the CS84U intercepts keyboard input directly, it will work on multiple computing platforms. Please note: networking components such as switches, routers, UPS & wireless devices require that speeds & standards be consistent throughout the network to gain optimum performance. To avoid compatibility clashes or for advice, please contact us on solutions@ebuyer.com.