The SVM-HDMI44 is a 4 x 4 HDMI Matrix Switcher V 1.3b that routes high definition HDMI video in multiple resolutions up to 1080p plus multichannel digital audio from any of the four HDMI sources to the displays. Four outputs give you the choice of sending high definition audio and video signals up to four displays. Any four inputs to any four outputs matrix switching allows for maximum versatility for integrated systems. The 4 x 4 HDMI Matrix Switch, SVM-HDMI44, eliminates the need to disconnect and reconnect sources to a display equipped with one input. It works with HD-DVD players, TiVo systems, HT PCs, and satellite set top boxes that connect to an HDMI display. Every source is accessible at all times by any display by selecting it with an IR remote or through RS232 port.