Dual LED Ring designed for ultimate front and back lighting effect. 30 LEDs with matching colored translucent blade for extreme lighting effect. Extreme Airflow of 101 CFM at low noise level of 38 dBA only. Built-in Anti-vibration pads for better stability while fan in operation. Anti-Vibration Pads absorb and reduce vibrations caused by fan when in operation. UL/RU, CE, RoHS certified. 3 Pin 3 Wire fan connector Sleeve Bearing 4 screws included Available in Blue LED, Red LED, or White LED version.