The SPLITMUX®-DVI-4RT is a professional Quad Screen
Multiviewer which allows the user to display video from four
various computers to one monitor simultaneously. Also, it can
route one of the four connected computers to a shared mouse
and keyboard for operation and to four (4) extra USB devices.
The unit supports HDTV resolutions to 1080p and PC
resolutions to 1920x1200. It includes LED indicators to show
which port is active.