Feature:1. Ultra Thin 140mm 4pin PWM Fan: This fan operates at a maximum noise level of only 31dBA, providing a quiet working or gaming environment.2. Efficient Hydraulic Bearing: This cooling fan features a durable MFDB dynamic pressure bearing, with a lifespan of over 10000 hours, thanks to the low friction magnetic levitation bearing technology.3. PWM Intelligent Temperature Control: With a dynamic speed range of 300 to 1100rpm, this fan can adjust its speed to reduce noise levels, simply by inserting the PWM pin into the for SYS FAN pin.4. 15 Blade Design: The 15 high pressure fan blades deliver a maximum airflow of 76.5CFM at 1100PRM, focusing on improving performance with stable air pressure and powerful airflow.5. Easy Installation: Compatible with all types of computer cases, this fan features a user friendly power interface design for easy plug and play installation, with a 105mm, 125mm dual screw hole space.Specification:Item Type: PWM Case FanMaterial: ABSSize: Approx. 140 x 140 x 15mm / 5.51 x 5.51 x 0.59inHole Spacing: Approx. 105 125mm Double Screw Hole SpaceBearing Type: MFDBRated Voltage: 12VRated Current: 0.30.02ARated Speed: 300 to 1100RPM10%Airflow: 76.5CFMFunction: 4 PIN PWM.Package List:1 x Fan4 x Screws