Product Detail Lifetime Series Pro 550w PSU. 135mm Fan Thermostatically controlled fans for low acoustic noise. Short Circuit Protection 20/24 Pin Motherboard Connector 4 SATA + 2 PCIe Meets ATX v2.2, V1.3 and ATX 12V v2.2 Specifications . The "Lifetime Series Pro 550W Psu" is best product for you. We recommended Lifetime Series Pro 550W Psu