Evercool EC8015HH12BP 80mm x 15mm Hi-Speed Dual Ball Bearing PWM 4 Pin Fan Size: 80mm x 80mm x 15mm Noise: 18.2 - 38.9 dBA Airflow: 37.1 cfm Speed: 2000 - 6000 rpm Voltage: 12v Bearing: Double Ball Bearing Includes 4 Pin PWM TO 4 Pin Molex Adapter + Mounting Screws