CORSAIR RMx series fully modular power supplies are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC, with virtually silent operation.80 PLUS Gold efficiency, delivering 90% energy efficiency at real world load conditions. ZeroRPM mode for fanless operation at low loads and outstanding noise reduction. 135mm thermally controlled fan spins up as needed. Fully modular cables for easy installation, less clutter, and helps maximize airflow through your computer’s chassis. Engineered to meet maximum power output at a server-grade 50°C temperature rating. Over-voltage protection, under-voltage protection, short circuit protection, over power protection, and over temperature protection provide maximum safety to your critical system components. Safety and Agency Approvals: FCC, ICES, CE, UL / CUL, CSA, C-Tick/RCM, TUV, CB, CU, KC Mark, RoHS, WEEE, RoHS (China), REACH