4 input card slots, supports input signals including DVI, HDMI,
USB, SDI.
Each DVI module supports 1 DVI-I input and compatible CVBS,
VGA,YPbPr.
Each HDMI module supports 1 HDMI-A input.
Each USB module supports 1 USB-B input and 1 USB backup.
Each SDI module supports 1 SDI input and 1 SDI loop out.