New Version Ver. 2.2 Cooling: 12cm Silent Fan Silent & Better Ventilation ATX 12V Compliant for all Types of CPU & Mainboard Dual 12v Rails CE & PFC Approved AC INPUT: 230 VAC 5A 50-60 Hz DC +3.3V +5V +12V1 +12V2 -12V +5VSB Output 28A 30A 16A 16A 0.3A 2.5A Max 550W 20+4 Pin Main Connectors:1 4-Pin 12V Connectors:1 SATA Connectors:3 4-Pin Molex Connectors:3 6-Pin PCI-e Connectors:1 Floppy Drive Connectors:1 Dimensions: 150mm x 85mm x 158mm (W x H x D) Input Voltage: 230 VAC Input Current: 5A Input Frequency Range: 50-60 Hz PFC: PPFC Power Good Signal: 150-450 ms Hold Up Time: 1ms-40ms Efficiency: 75% MTBF: 100, 000 Hours Protection: OVP / UVP/ OPP Power: 550W Operation Temperature: 45°C Safety: CE / ROHS Cooling: 12cm Fan Noise: < 17 d BA