Model RS550-AMAAB1-EU Type Intel Form Factor ATX 12V V2.31 Dimension (W x L x H) 150 x 140 x 86mm / 5.9 x 5.5 x 3.4 inch Input Voltage 100-240Vac (Full Range) Input Current 8 - 4A Input Frequency Range 60 - 50Hz PFC Active PFC (>0.9 typical) Power Good Signal 100-500ms Hold Up Time >16ms Efficiency 85% Typically MTBF >100,000 Hours Protection OVP/UVP/OPP/OTP/SCP/OCP Output Capacity 550W Operation Temperature 0~40°C Regulatory CE/FCC/UL/TUV/RCM/EAC/BSMI/CCC Certifications 80 Plus Bronze Connector MB 20+4 Pin x 1 CPU12V 4+4 Pin x 1 PCI-e 6+2 Pin x 2 SATA x 6 4Pin Peripheral x 3 4Pin Floppy x 1