AMP/Molex connector part number: 640445-4
4P connector pinout:
Pin 1 : -V
Pin 2: GND (Earth)
Pin 3: GND
Pin 4: +V
*Be mindful of if your modules require +/-12V or +/-15V. This power distribution board can handle either, but not both at the same time.
Most modules can be adapted from +/12V to +/-15V with minimal resistor changes. You’ll have to check the build documentation for those modifications.