Because it is a matrix routing switch, any input may be routed to any output; or the same input may be routed to all outputs or any combination. It completely eliminates the need to constantly move around VGA input and output cables. The SB-4184LCM is useful for Matrix signals from VGA-AUDIO source devices (such as VGA base : Personal computer, Satellite Receivers, CAT5 Set Top Boxes, etc.) to VGA destination devices (such as VGA base: HDTV, LCD TVs, Plasma TV Sets, Video Projectors, etc.). Selection of inputs is made via the Front Panel push buttons or an Infrared Remote Control unit or RS-232 control by computer.