This Avocent 4-port USB switchbox is a great addition to any computer setup. A KVM (Keyboard, Video, Mouse) switch box is a hardware device that allows you to control multiple computers or servers using a single keyboard, mouse, and monitor. It enables you to switch between the connected computers in real-time without the need for physically connecting or disconnecting the input/output devices. This is particularly useful for server rooms or data centers where multiple systems need to be managed. The KVM switch box routes the input signals from the keyboard, mouse, and monitor to the selected computer, giving the user the impression that they are directly connected to that specific system.