At the core of the system is the KTD-440 Master Switcher Chassis, which can manage 64 video inputs by 32 monitor outputs. With the addition of color-coded expansion cards and an expansion chassis, the KTD-440's matrix switching capabilities can be increased to 512 inputs by 64 outputs. Digiplex IV also offers video loss detection cards, which monitor video signals and alert users in the event of camera failure.

The system's compact, improved design requires 75 per cent less space than previous Digiplex switchers. A fully expanded system requires only 28 units (49 inches) of space in a standard 19-inch rack.