CS84A is a KVM Switch with built-in PS/2 on each of the front & rear panels. It can control 4 servers via a single console & allows users to switch between computers via the buttons on the front panel of the switch or the hotkey configuration on the keyboard. It is the simplest & most convenient most convenient solution for multi-computer management. Please note: networking components such as switches, routers, KVM & 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.