The VM8604 4-Port DVI Output Board is offers an easy way to route any of 4 audio/video sources to any of 4 displays, when used in combination with ATEN’s Modular Matrix Switch. The VM8604 supports Seamless Switch technology that provides video switching in realtime, a built in scaler that handles different video resolutions, and EDID Expert technology for smooth switching between displays, giving you the perfect viewing experience.