SparkFun ATX Power Connector Breakout Board Features a standard 4-pin computer peripheral port Provides 12 and 5 V power supply The SparkFun ATX Power Connector Breakout Board breaks out the standard 4-pin computer peripheral port when mated with an ATX connector for your 12 and 5 V devices! Once you have chosen a power supply (whether it be an ATX power supply or the 12 / 5 V wall adapter), you're ready to give your project some life. This board will need additional parts including a 12 / 5 V power supply, an ATX breakout, and screw terminals to power your project directly or pump power into a breadboard using standard headers. If you are looking for all of these parts in a single package make sure to check out the SparkFun ATX Power Connector Breakout Kit. ATX power supplies usually have a number of power connectors available to power components for a desktop computer. One of these connectors is the 4-pin power connector, which is intended to power 12 and 5 V computer peripherals (such as disk drives).