Attained by using a high-quality fan System Power 9 400W is equipped with a temperature-controlled 120mm fan. It provides you with the low noise operation that be quiet! is famous for, built into an entry-level system. Advanced reliability for CPU and GPU System Power 9 400W provides stable and dependable power for CPU and GPU. It is equipped with two independent 12V-rails and supports several graphics cards with two PCI express connectors for multi-GPU systems. Equipped with a wealth of advanced technology The PSU is equipped with DC-to-DC conversion for tight voltage regulation, even under heavy cross-loading conditions. This ensures reliable operation and makes it ready for the next generation of processors and graphics cards. Attractive design for high performance, cost-effective systems System Power 9 400W comes with full high-quality sleeved cables that add a touch of class to any PC system. A complete range of safety features Top component protection with a full suite of safety functions, including OCP, OVP, OPP, OTP UVP and SCP, which provide the ultimate in secure operation.