The Multibridge Pro requires a specific 12V 5A supply. If the voltage drops to 11.5V, the PCIe link will drop, but the front LEDs will stay lit. Test with a multimeter.
The is a legacy configuration tool used primarily for older "Multibridge" and "Broadcast Converter" hardware. While modern Blackmagic devices use the unified Desktop Video or Converters Setup software, this utility is still essential for managing older rack-mount converters and breakout boxes. 1. Hardware Connection & Setup blackmagic multibridge utility
: The most stable "last" version is typically around 7.9.x . It can be found by scrolling deep into the "Latest Downloads" section of the Blackmagic Design Support Center . The Multibridge Pro requires a specific 12V 5A supply