It's easy to overload the standard 35-watt A500 power supply. The AE heavy duty 100-watt power supply has enough power to free you from having to disable an external disk drive to conserve power. The power supply runs at 110 / 220V ± 15% to accommodate European standards. Output is +5V (13A), +12V (2A), -12V (1A). Dual front-mounted auxiliary and main power switches allow separate control of an additional peripheral.