Compact Design: 120mm x 120mm x 25mm, fits easily in most PC cases, making it ideal for upgrading or replacing existing fans to improve airflow and reduce noise. PWM Control: 4-pin PWM connector for precise fan speed adjustment and quiet operation, allowing you to customize the fan speed to your system's specific needs. High-Speed Performance: 900-1800 RPM (±10%) for efficient airflow and cooling, making it suitable for high-performance gaming and computing applications. High Airflow: 29.37-86.34 CFM for effective heat dissipation and system cooling, helping to prevent overheating and extend the lifespan of your components. Long Life Hydraulic Bearing: Equipped with a long-life hydraulic bearing, designed to reduce friction and wear, increasing the fan's lifespan and ensuring reliable operation for years to come. upHere 12BK4-5 PWM Case Fan,120mm PC Fan,High Performance Cooling Fan, 4-Pin, Adjustable Speed 900-1800 RPM, Compatible with Desktop