HDMI Send/Receive Pass-Through Wallplate allows to hide HDMI cable that's connected to the Flat Screen HDTV hanging on the wall, by running the cable behind the wall and into the back of the faceplate. Then connect a cable from your DVR or SAT box into the front of the faceplate - no unsightly cable dangling down from your TV. If your DVR or SAT box is located a long distance from the HDTV, use Tripp Lite's P166-001-A, Active wallplate with signal booster.