StarTech.com Expansion Slot Rear Exhaust Cooling Fan with LP4 Connector - PC Case Exhaust Fan/Video Card Cooler Fan - System fan kit - 8.27in Maximum Fan Diameter - 51.6 gal/min Maximum Airflow - 2200 rpm - 32 dB(A) Noise

Can be used to pull in air from the top to vent out the rear, or pull in air from the bottom to vent out the rear Ball bearing fan; Inline LP4 power connectors; 12V @ 0.15A, 1.8W; 6.9 CGM @ 2,200 RPM; 32 dBA; MTBF: 37,739 hours; Black plastic housing; Reversible bracket NOTE: Does not support PWM for fan speed control and will operate at full speed Fits in standard full-height/full-profile computer cases