the 4*4 hdmi matrix routes high definition video in multiple resolutions up to 1080p plus multichannel digital audio from any of the four hdmi sources to the displays. every source is accessible at all times by any display by selecting it with an ir remote. fully hdcp compliant. note: this hdmi product supports both audio and video signals. capabilities and traits: - switch easily between any four hdmi sources - distributes any of the four inputs to any or any combination of the four hdmi output displays - maintains high resolution video - beautiful, sharp hdtv resolutions up to 1080p, 2k, and computer resolutions up to 1920*1200 are easily achieved - discrete ir remote (included) - serial rs-232 remote port - rack ears included - hdmi compliant - hdcp compliant