The Corsair RM 850x Black Power Supply RPS0017 is a high-quality ATX power module designed for computer systems requiring up to 850W of maximum power. With a sleek black design and modular connectors, this power supply is ideal for users looking for reliable and efficient performance. Featuring a single fan for cooling and support for various connectors including 4 pin peripheral, 24 pin, 6+2 pin PCI Express, and SATA I, the Corsair RM 850x is a top choice for those needing a dependable power supply for their system.