Switching regulated power supply, 133 Watt. Generates 5 volts at 16 amps, 12 volts at 4 amps and -5 volts at 1 amp. Has screw-lug terminals and mounting brackets. This is the most common arcade video game power supply used on games with JAMMA wiring harnesses. These must be adjusted to no more than 5.25 volts DC at the screw lug or 5 volts on the printed circuit board. Higher voltages can damage your circuit boards. Incorrect installation can destroy your game. Adjustable for 110v or 220v line operation. Danger of electrical shocks are possible. Should be installed by experienced game technicians.