HEC Orion HP485DR 485W Power Supply, Features: Compatible with Intel Pentium 4 and AMD, Dual 8 cm fans for better heat dissipation, 20+4 Main Power Connector Supports Latest "Desktop Motherboards" , Dual +12V rails provide plenty of power sources to support high end systems. Super Quiet Technology: Smart Fan Control Function Keeps Noise Level Under 22dBA, Over and under voltage protection, High Efficiency (>75%), High Energy Power With Low Ripple Noise, 100% Hi-Pot, Chroma & Burn-in Function Tested