A hardware device that allows a user to control multiple computers from one or more sets of keyboards, video monitors, and mice. This switch then allows personnel to connect to any server in the rack.

KVM switches differ in the number of computers that can be connected. Traditional switching configurations range from 2 to 64 possible computers attached to a single device. Enterprise-grade devices interconnected via daisy-chained and/or cascaded methods can support a total of 512 computers equally accessed by any given user console.