The Comprehensive CSW-HD420 4x2 HDMI Switcher Splitter allows four HDTV HDMI devices to be switched easily into two HDMI compatible HDTV, monitors or projectors. Two outputs allows you to have the choice of sending HDTV audio and video signals up to two displays. Eliminate the inconvenience of disconnecting and reconnecting of different sources with this all in one device. It works with Blu-ray DVD players, TiVo systems, HT PC's, 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 front panel switch. Always use Comprehensive brand premium cables to ensure maximum performance!