Laptop CPU Cooling Fan Replacement for Lenovo B40-30 B40-45 B40-70 B40-80 B41 B50 B51 Series Laptops

This brand new laptop CPU cooling fan is a dedicated replacement part for Lenovo B40-30, B40-45, B40-70, B40-80, B41-30, B41-35, B41-80, B50-30, B50-45, B50-70, B50-80, B51-35 and B51-80 laptops. It comes with a standard 4-wire PWM plug that perfectly matches the laptops built-in thermal management system to adjust fan speed intelligently according to CPU load.

Adopting high-efficiency curved turbine blades and durable silent brushless motor, it delivers stable strong airflow to exhaust accumulated CPU heat rapidly. It effectively solves common issues such as loud fan rattling, high-temperature alarms, performance throttling and unexpected power-off caused by aging or broken original cooling fans. The anti-vibration frame greatly reduces running noise during long-hour study and office work.

Every cooling fan undergoes strict airflow, voltage and durability inspection before delivery. The fan housing size, screw hole positions and cable length are completely consistent with the original fan, requiring no cutting or modification during installation. It is a cost-effective cooling repair spare part to restore normal heat dissipation performance of Lenovo B series daily business notebooks.