The vs481 4 port hdmi audiovideo switch is a multi input single output unit designed to conveniently connect four hdmi source units such as dvd player set top box satellite receiver etc then direct that input to a single hdmi monitor device selection can be accomplished by manually pressing a button on the front panel or from across the room with the included remote unit the vs481 supports all the common hdtv resolutions including 480p 720p 1080i 1080p and video standards vga sv