Corsairs HX Series power supplies give you extremely tight voltage regulation, virtually silent operation, and a fully modular cable set. With all Japanese 105C capacitors, theyre a great choice for high performance PCs where reliability is essential. 80 PLUS Platinum efficiency reduces operating cost and excess heat, and together with the fluid dynamic bearing fan and Zero RPM Fan Mode technology, gives you virtually silent operation.Features:- 80 Plus Platinum: Runs cooler and uses less power than less efficient power supplies- Fully Modular: Allows user to only use the cables they need for a cleaner looking build with better airflow- 10-year warranty: Backed by Corsairs legendary technical support and customer service- 135mm FDB fan with Zero RPM mode: Virtually silent operation at low loads- +12V Rail Switch: Gives the user the choice of a single +12V rail or multiple +12V railsSpecification:- Model: HX850- Power: 850 Watts- 80 Plus: Platinum- Cybenetics: ETA-B Efficiency, LAMBDA-A+ noise rating.- MTBF: 100,000 hours- Fan bearing technology: Fluid Dynamic- Fan size (mm): 135- Safety: Over-voltage protection, under-voltage protection, short circuit protection, over power protection, and over temperature protection- Safety and Agency Approvals: FCC, ICES, CE, UL, cUL, RCM, T�V, CB, CCC, BSMI, EAC, RoHS, WEEE, KC- Compatibility: ATX12V v2.4 + EPS 2.92 & backward compatible with ATX12V 2.2, 2.31- Product Dimensions (mm): 150 x 180 x 86 - Weight: 1.92- Warranty: 10 YearsConnectors: - 1x 24-pin ATX Cable - 2x1 EPS12V/ATX12V Cable (4+4)- 3x2 PCIe Cable (6+2)- 4x4 SATA Cable - 2x3 PATA Cable Contents- HX Series Power Supply- Power Cord- Mounting Screws (4 pcs)- Warranty Document