Cooler Master MWE 550 Bronze V2 PFCActive PFC Input Frequency50-60Hz ErP 2014 Lot 3Yes ATX 24 Pin Connectors1 EPS 4 4 Pin Connectors1 Power Good Signal100 – 500 ms MTBF>100,000 Hours Fan Size120mm Category500 to 750W 80 PLUS Rating80 PLUS Bronze ModularNon Modular Fan BearingHDB Efficiency85% Typically 80 Plus EfficiencyBronze Input Voltage100-240V PCI-e 6 2 Pin Connectors2 SATA Connectors6 Peripheral 4 Pin Connectors4 Fan Speed1500 RPM Operating Temperature40°C SeriesMWE Bronze Series Noise Level @ 50.6 dBA ATX VersionATX 12V V2.52 ProtectionsOVP ProtectionsOPP Noise Level @ 20.13 dBA ProtectionsSCP Dimensions (L x W x H)140 x 150 x 86 mm ProtectionsUVP ProtectionsOTP Noise Level @ 1001.0 dBA Input Current8-4A RegulatoryCCC RegulatoryCE RegulatoryTUV-RH Hold Up Time>18ms at 100% Full Load@230Vac RegulatoryRCM RegulatoryEAC RegulatorycTUVus RegulatoryFCC RegulatoryBSMI RegulatoryKC RegulatoryCB ModelMPE-5501-ACAAB