Cooler Master eXtreme Power Plus 500w Power Supply (RS500-PCARD3-US) Multiple protection design More than 70% efficiency Super silent operation with intelligent fan speed control Green power design to meet with energy star Compliance with the newest Intel std ATX 12V V2.3 Maximum Power: 500 W Type: ATX from factor 12V V2.01 Non PFC (Power Factor Correction) Fan: 120mm Sleeve bearing fan Connectors: 1 x 20+4 pin Motherboard Connector; 1 x 4+4pin 12V CPU Connector; 1 x 6pin PCI-Express Connectors; 4 x SATA Connectors; 5 x 4pin Peripheral Connectors; 1 x 4pin Floppy Connectors Protection: OVP/ OPP/ Short Circuit Protection