A KVM (Keyboard, Video, Mouse) switch is a hardware device that allows a user to control multiple computers from a single keyboard, video display monitor and mouse.

KVM switches are often found in data centers where multiple servers are placed in a single rack. By pressing a button on the KVM switch (or a hotkey), the administrator can change control from one server to the next.

Using a KVM switch can save the administrator the cost of purchasing a dedicated keyboard, monitor and mouse for each computer, save space in the server room and limit cable clutter.