Thermaltake PurePower W0057RU-01 TWV 500-Watt Power Supply Unit for ATX 12V 2.2 and EPS 12V Dual PCI-Express connectors, 4 S-ATA, and 24 (20) pin connectors Modularized cable management feature eliminates cable clutter and improves airflow within the chassis 5.25" Total Watts Viewer and Fan Speed Controller to read the power consumption and controls the power supply fan speed Supports nVIDIA SLI, ATI CrossFire, and Dual Core CPU technologies Under-voltage, over-voltage, over-power, and short-circuit protections