Logisys 550W Ball Bearing Switching Power Supply

550 Watt power supply boasts quiet performance by installing 120mm ball bearing fan 75 cubic foot per minute air flow at 2, 000RPM Constructed of rust-resistant steel for years of steady performance Power integrated with dual SATA connectors, four 4-pin molex connectors, one 20-pin + 4-pin ATX connector and one P4 4-pin connector 110-volt/ 220-volt switchable Energy Star Efficiency -- 680-micro-Farad 200-volt capacity supplies steady, clean DC power 4 Pin + 12-volt power connector for P4 Complies with FCC part 15J class B 115Vac Operation and CISPR22 230Vac Operation Meets UL 1950. CSA 22.2 Level 3 Requirement Over Voltage, Over Power, Short Circuit protection 100 Hi-pot and Function (Chroma) tested 100 Burn-in under high ambient temperature (122 degrees F) MTBF above 100.000 Hrsat 25C Low noise and ripple