The 4-port USB KVM switch allows you to manage four computers with a single set of keyboard, monitor, and mouse. Switch between 4 computers with a simple push of a button! The KVM switch includes separate KVM cable sets, so users can start controlling 4 PCs immediately. The KVM cables also provide power to the KVM switch, eliminating the need for a power adapter. Hot Key functions provide instant access to features such as computer switching and auto-scanning. With Hot-Plug and Audible Feedback, the 4-port USB KVM switch is the perfect choice for managing multiple computers.