StarTech Professional 550 W internal Power Supply, professional-grade power supply is the perfect upgrade or replacement for powering your AMD or Intel based PC. With two 12V power rails and premium EMI/RFI power filtration for low noise and ripple, this is the perfect 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 2 dual ball bearing 8cm fans 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 ATX 2.01 form factor, the ATX2PW550PRO includes a split 24/20 pin ATX connector for compatibility with existing standards, as well as a generous number of accessory connectors - including 2 PCI Express connectors - to maximize your configuration possibilities.