These Switches route high definition video (in multiple resolutions up to 1080p) and digital audio from any one of the two/three sources to display unit. The inputs accommodate the simultaneous connection of two/three high definition video sources, such as satellite systems and HD DVD players. The output sends the high definition audio/video signals to a high definition display. Also offers a fantastic solution to keeping cabling simplified by only having one output into a HD display from 2/3 different input sources.