If you're running a high-performance system, you need a high-performance power supply. Startech.com's ATXPOW500DF gives your system components 500Watts of clean, reliable power. It features two high-airflow ball-bearing fans to keep your power-hungry system stable and cool. Guaranteed compatible with high-end Intel and AMD processors, the high-quality ATXPOW500DF is the reliable way to ensure that adequate power is delivered your computer's demanding components. The speed of the two ball-bearing fans is adjustable, so you can keep your system cool and quiet. The ATXPOW500DF power supply comes Serial ATA ready with two SATA connectors