SmartAVI's HDMI Matrix Switch, HDR4X4S, is a non blocking Matrix Router. This HDMI Matrix provides an easy and dynamic approach to managing high definition video installations, either directly or remotely using RS 232, infrared or over the Internet. The HDR4X4S HDMI Video Matrix Switcher supports multiple resolutions up to 1080p and digital audio from any four HDMI sources to four HD displays. This HDMI video routing switch is used in a wide variety of high definition video applications. These video switching devices are often found in Digital Signage, Commercial installations and home theater setups.