How much power does a 4 pin peripheral power connector provide?

A 4-pin peripheral power connector, commonly known as a Molex connector, typically provides +12V and +5V power. It can deliver a maximum current of up to 11 amps on the +12V rail and 11 amps on the +5V rail, depending on the specific power supply unit (PSU) capabilities. This allows for a total power output of approximately 132 watts when considering both voltage rails. It's mainly used to power older hard drives, optical drives, and other peripherals.