This 1U programmable scanning switch box is used to switch a single keyboard, monitor, and mouse between up to four (4-port) or eight (8-port) ProLiant servers. ??It routes all cables through the back of the rack cabinet and shows status information via on-screen display. For maximum convenience, switch boxes can be tiered to support up to sixteen (4-port) or sixty-four (8-port) servers from a single console.