Style:ARC | Size:550W The Rosewill ARC 550 power supply provides the best power solution for PC builders. 80 Plus Bronze certification offers up to 87% efficiency at typical loads. 550W of continuous power output with a strong single +12V rail powers your high-end system consistently and aggressively. The universal AC input 90-264V automatically scans and detects the correct voltage, while the Active power Factor Correction (PFC) provides clean and reliable power to your system. One 120mm fan with auto fan speed control provides excellent cooling performance without any noise. In addition, the comprehensive protection, plus an array of safety and EMI approvals (cTUVus, FCC, CE and RoHS), ensures outstanding reliability, durability, and eco-friendliness.