Corsair CMPSU-VS450 450-watt ATX power supply, AC input from 200~240VAV, conforms to ATX12V v2.31 standard, and is backward compatible with the ATX12V 2.2 and ATX12V 2.01 standards, active power factor correction (PFC) with PF value of 0.99, high-quality capacitors provide uncompromised performance and reliability, 3 years warranty