Rosewill ROCF-11004 - 120mm Computer Case Cooling Fan - Hydro-Dynamic Bearing, Silent, 2-Speed with PWM Control Type: Case Fan Bearing Type: HDB (Hydro Dynamic) RPM: 600 -1300 RPM Air Flow: 57.53 CFM Noise Level: 6.9 -16.05 dB(A) Power Connector: 4 Pin Color: Black Compatibility: Case