ATX 12V V2.3 provides constant reliable power for INTEL and AMD chipsets 12cm cooling fan with speed control enables ultra silent operation,Super Silent Power Supply PCI-E Ready for compatibility with NVIDIA and ATI/AMD Redon graphic cards , Longer DC Cable Supports PSU-BOTTOM-SET Cabinets Built in industrial grade protections: Over Voltage, Under Voltage, Short Circuit protection ,Rep ready with less than 1W power consumption High Reliability :MTBF > 200,000 hours, I/O: 20+4 Pin x 1, SATA HDD x 4, EPS 12V(4+4) x 1, Molex x 2, PCI-E P6 x 1, PCI-E P8(6+2) x 1