Feature:1. Silent Fan: PWM ARGB fan with 8 soft silicone pads at the corners to absorb vibration. Max noise only 31dBA, equivalent to the sound of falling leaves. Say no to noise disturbance during work or gaming.2. High Efficiency Hydraulic Bearing: Cooling fan with ultra durable MFDB dynamic pressure bearing. Using low friction magnetic levitation bearing technology, longer lifespan than traditional bearings, up to 10000 hours of bearing life.3. Smart PWM Temperature Control: Dynamically control fan speed within the range of 3001100rpm, reducing noise. Plug the PWM pin into SYS_FAN pin, and the motherboard sync pin into the motherboard +5V D G pin (Note: The motherboard sync pin has a male and female design, adjacent fans can be connected in series with other lighting devices).4. 15 Blade Design: With 15 high pressure fan blades, the airflow can reach 76.5CFM at 1100PRM. The computer case fan focuses on improving performance, providing stable air pressure and strong airflow.5. Easy Installation: The computer case fan is compatible with all types of cases, easy to install. Humanized power interface design, plug and play, 105mm 125mm dual screw hole matrix (Note: the hole distance is the distance between the center points of the 2 screw holes).Specification:Item Type: Computer Case FanMaterial: ABSProduct Size: Approx. 140x140x15mm / 5.5x5.5x0.6inHole Spacing: 105mm 125mm Dual Screw Hole SpacingBearing Type: MFDBRated Voltage: 12VRated Current: 0.30.02ARated Speed: 300-1100RPM10%Airflow: 76.5CFMFunction: PWM and ARGB.Package List:1 x Computer Case Fan 4 x Screws