StarTech 2x4 Port Matrix DVI Audio Video Switch VS420RDVIA Max Source Support: 2 x DVI Max Output Support: 4 x DVI Audio: Connector A: 2 - 3.5 mm Mini-Jack (3 Position) Female Connector B: 4 - 3.5 mm Mini-Jack (3 Position) Female DVI: Connector A: 2 - DVI-I (29 pin) Female Connector B: 4 - DVI-I (29 pin) Female Power Supply: Output Current: 1.5A Output Voltage: 12 DC Specification: Rack-Mountable: Yes Daisy-Chain: Yes Maximum Cable Length: 16.4 ft [5 m] Color: Black Enclosure Type: Aluminum Feature: This 2x4 Port Matrix DVI Audio Video Switch lets you select between two DVI-I sources for display on up to four monitors. At the push of a button, the DVI and audio matrix switch lets you select the audio and DVI input that will be delivered each display - providing the versatility needed to simplify digital signage configurations or multi-monitor presentations....