StarTech Silent 400 W Internal Power Supply with 12 cm Fan is the perfect upgrade or replacement for powering your AMD or Intel based PC. With dual 12V power rails and premium EMI/RFI power filtration for low noise and ripple, this is the ideal solution for delivering stable power to the most demanding devices. Plus, with Quad+1 protection from short circuit, over power, over voltage and no-load situations, as well as a 12cm dual ball bearing fan for superior air flow, you can rest assured that this power supply will be as dependable as you need it to be. Compliant with the ATX12V 2.01 form factor, the ATX2POWER400HS includes a split 24/20 pin ATX connector for compatibility with existing standards, as well as a generous number of accessory connectors to maximize your configuration possibilities.