The CSW-HD440 HDMI matrix switcher routes high definition video in multiple resolutions up to 4Kx2K@30Hz plus multichannel digital audio from any of the four HDMI sources to the displays. Four outputs give you the choices of sending high definition audio and video signals up to four displays. Any four to any four matrix switching allows for maximum versatility for integrated systems. The CSW-HD440 eliminates the need to disconnect and reconnect sources to a display equipped with one input. It works with Blu-ray 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 front panel push buttons, an IR remote or through the RS-232 port. Always use Comprehensive brand premium cables to ensure maximum performance!