SilverStone Strider Plus ST50F-P 500W ATX 12V v2.3/EPS 12V 80 PLUS BRONZE Certified 100% Modular Active PFC Power Supply (Black) 100% modular cables Efficiency 82%~85% at 20%~100% loading Class-leading single +12V rail with 34A Silent running 120mm fan with 18dBA minimum Active PFC