This product is either discontinued or we cannot get that from suppliers.
Corsair 850w CP-9020180-AU, Modular Power Supply, ATX Connector-1, ATX12V Version-v2.4, Fan 140mm, MTBF 100,000 hours, EPS12V Connector-2, Floppy Connector-1, PCIe Connector-6, SATA Connector-10.
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.