A KVM Switch is an hardware device that allows users to use several computer with a single set of monitor, keyboard and mouse, thus allowing to access different physical machines (even geographically distant) without having to move around or change peripherals. Some versions also support USB ports sharing for storage drives or additional devices.

A KVM Switch is usually composed by a main body which hosts the switch command, and two or more cable sets (video, PS2, USB, etc..), one for each machine to control. On the other end of the connection group it’s possible to connect keyboard, monitor and mouse.