PartsCollection Super Performance Delta 80x80x38mm Double Ball Bearing PWM Speed Control Function Case Fan (Black) Delta Super High Speed 80 x 38 MM (3") Fan AIR FLOW UP TO 120 CFM ** PWM Speed Control (Motherboard 4-Pin Connector support) Speed UP TO 10500 RPM ** PWM Speed Control (Motherboard 4-Pin Connector support) DC 12V. MAX 33W MAX Noise Level: 70 dBA