Easy Rail Technology Provides Maximum Power. Unique, continuous Easy Rail technology enables you to maximize available power & make set-up easy. Stack numerous power-hungry components without fear of crashing. It's also a perfect solution for hardcore gamers. Interfaces/ Ports Power Connectors 1 x 20+4 pin, 1x 4 pin + 4 pin SATA Connectors 8 x SATA PCI Connectors 2 x PCI-E 6-pin • 2 x PCI-E 6+2-pin Floppy Connectors 1 x 4-pin Floppy connector Other Connectors 7 x Peripheral 4-pin Electrical Voltage 100 to 240 VAC Frequency Range 50 to 60 Hz Power 550 W Compliance Standards 80PLUS Certification (Bronze) • NVIDIA SLI ready certified • Ro HS Environmental Operating Temperature 0 to 50 °C Physical Form Factor ATX 12V v 2.2