CORSAIR RM850x Shift Fully Modular 80 PLUS Gold ATX Power Supply PSU (CP-9020252-NA). The on/off toggle switch is not functional, however it does not affect the functionality of the power supply. It includes the accessories in the original box. Increase the power and strengthen the backbone of your computer setup with the Corsair RMx Shift 850-Watt PCI-E 5.0 ATX modular power supply. With its side-cable interface, connections are kept easily within reach, and with fully modular micro-fit connections, PC builds and upgrades are simpler than ever. Quiet and efficient, this power supply unit is compatible with most graphics cards and motherboards. The Corsair RMx SHIFT is a modular power supply with detachable cables for easy installation and clean cable management. Compatible with most modern graphics cards and motherboards. Designed for easy computer upgrades and new builds. 850W of power can provide enough power for gamers with a mid- to high-range video card. This ATX power supply affixes to an ATX motherboard securely. Features a high-performance, low-noise 140mm fluid dynamic bearing fan with silent zero RPM modes during low- and medium-power loads. This power supply uses reliable Japanese 105 degree Celsius-rated electrolytic capacitors. The Corsair RMx Shift features one 24-pin ATX (24-pin) connector, one 1 12-pin, two GPU Power connectors, two ATX 12V/ESPS12V (4+4) pin connectors, four PCle (6+2) connectors, 12 SATA (straight) connectors, and eight PATA connectors. Power supply features overload and over voltage protection to keep your tech safe. Certified at 80 PLUS Gold efficiency, this power supply is cybernetics-certified for lower power consumption and cooler temperatures.