Feature: 1. Silent Operation: The cooling fan has 8 soft silicone pads at the corners, which can absorb vibrations during high speed operation. The maximum noise is only 43dBA, providing you with a quiet work and gaming experience. 2. MFDB Bearing: This cooling fan adopts excellent MFDB dynamic pressure bearings. Adopting low friction coefficient magnetic levitation bearing technology, it has good stability and a bearing life of over 10000 hours. 3. Temperature Control: The PC case cooling fan supports PWM intelligent temperature control. The fan speed can be dynamically controlled within the range of 800‑3000rpm to reduce work noise. 4. High Efficiency: The PWM cooling fan has 7 blades design, and the airflow can be up to 132CFM at 3000PRM. Provides you with stable air pressure and strong air volume, which is efficient and practical. 5. Easy Installation: The size of the cooling fan is 120x120x25mm, with 105mm screw hole pitch, compatible with most computer cases, easy to install. With user friendly power interface, has strong practicality. Specification: Item Type: PC Case Fan Material: ABS Fan Size: Approx. 120 x 120 x 25mm / 4.7 x 4.7 x 1in Screw Hole Pitch: Approx. 105mm / 4.1in Bearing Type: MFDB Rated Voltage: 12V Rated Current: 0.5±0.02A Rated Speed: 800-3000RPM±10% Airflow: 132CFM Function: PWM. Package List: 1 x Case Fan1 x 4 Pin Extension Cable4 x Long Screws4 x Short Screws