The HKCU-UHD30 is an optional 4K HDR Processor Board, which adds a 4K HDR signal output capability to the HDCU-3100 Camera Control Unit.
The HKCU-UHD30 enables the HDCU-3100 and HDCI-3170 CCU to transmit ultra-high bit rate (UHB) signals automatically and output 4K signals (3840/59.94p or 3840/50p).