The new Lifetime Series Pro 550W ATX12V & EPS12V Power Supply is the latest addition to our line-up of professional power supplies. It provides the ultimate amount of power and performance. Its sleek new design incorporates ascetics with functionality. This design comes with a 135mm cooling fan which reduces heat by 20% and noise by 15 dB. In addition to the reduction of heat and noise, It also comes with sleeved finished power cables which provide better air flow and help reduce cable clutter. Over all this new power supply is the ultimate upgrade or addition to any system.