This is a eurorack PSU which uses two 3A PWM regulators like these from Aliexpress and outputs +-12V DC.
The output is only a 10 pin power bus.
As the power source, use a AC transformer with two 12V or 15V secondary windings.
As for the old files in this repo (1A PSU). I've disgned them over 4 years ago and back then I had no idea how to make good PCBs (not saying this new PCB is something amazing). I feel bad deleting them so I'll leave them here but DO NOT BUILD THE OLD FILES!.