This class of KVM switch overcomes the frustrating limitations of an Emulated USB Class KVM by emulating the true characters of the connected devices to all the computers simultaneously.OverviewA KVM switch (with being an abbreviation for "keyboard, video, and mouse") is a hardware device that allows a user. Switches to connect multiple computers to one or more peripherals have had multiple names. The earliest name was Keyboard Video Switch (KVS). With the advent of the mouse, th. USB keyboards, mice, and I/O devices are the most common devices connected to a KVM switch. The classes of KVM switches discussed below are based on different types of core technologies, which vary in how the KV.