The KVM switch allows access, control, booting, and rebooting of four USB-enabled computers using a USB keyboard, a mouse, a monitor, a microphone, and a pair of speakers. The KVM-0422 is a plug-and-play KVM switch that requires no power supply or additional software. Switching between PCs can be done using buttons on the KVM-0422 or through a keyboard shortcut. Additionally, the KVM features an auto-scan function that automatically switches between the computers. The LED display provides a quick overview of which computer is active.