Zumax 1050W Active PFC 20/24 Pin ATX12V/EPS12V Power Supply ZU-1050W Supports the latest ATX12V v2.2 and EPS12V 2.91 standards and is backwards compatible with ATX12V 2.01 systems Active Power Factor Correction provides clean and reliable power to your system. Quiet and Cool 120mm thermally controlled fan Turbo Fan Switch providing enhanced cooling to case and PSU fans