4 Channel DVI Input Card for Multimedia 16 x 16 Matrix Switch (500470). The DVI Input Card (500472) is a 4 channel module for MuxLab's Multmedia 16x16 Matrix Switch. The card allows up to four DVI sources to be switched and/or distributed via native HDMI or Cat5e/6 cable. The card features two DVI-D connectors and supports up to four channels when used a 2-port DVI-D dongle. The 500472 converts all DVI channels to HDMI format for transmission via the HDMI and/or HDBaseT output cards.