SeeedStudio - ATX Breakout Board Bench Power Supply Computer - DIY Maker Open Source BOOOLE 1)The ATX breakout board routes the -12, 3.3, 5 and 12 volt ATX outputs to screw terminals, each protected by a 1.25 amp resettable polyfuse. 2)Optional load resistor included but NOT soldered. Open source (CC BY-SA). Note:A 9 Watt load resistor is included but not soldered to the board. 3)These four voltages cover many common electronics needs, there's even a negative voltage (-12 volts) for op amps and audio projects. 4)Recycle an ATX computer power supply into a beefy bench tool that powers your projects. 5)On-Off button and control circuit