The HSS0402 HDMI Matrix Switch allows four HDMI devices to be switched into two HDMI compatible monitors or projectors. The HSS0402 HDMI Matrix Switch eliminates the need to disconnect and reconnect sources to a display equipped with one input. It works with HD-DVD players, Blue Ray DVD, PS3, and satellite boxes that connect to two HDMI displays. Every source is accessible at all times by any display by selecting it with an IR remote. Imagine having all of your HDMI devices (DVD Player, satellite or cable box, etc.) connected to one television, in a living room, but being able to use the DVD Player or satellite/cable receiver in a bedroom or basement.