Control up to 4 VGA and USB computers from a single keyboard, mouse and monitorThe SV431DUSBU 4 Port 1U Rack Mountable USB KVM Switch with OSD lets you control multiple USB based computers from a single console (USB keyboard, USB mouse, monitor).Convenient push-button and hot-key controls provide quick, reliable switching between connected computers while manual and auto-scan switching modes and an On Screen Display (OSD) offer additional control options.Designed to ensure maximum space efficiency, the USB KVM switch features a slim 1U design that fits neatly into a server