Features: 4 Heatpipes Design: with four heatpipes, it effectively dissipates heat generated by processor and provides reliable heat dissipation. 12cm Large Fan: With a 12cm large fan, it enhances heat dissipation ability, ensures that CPU keep running at a low temperature, and improves system performances. PWM Temperature Control: Supports PWM temperature control technology, intelligently adjusts fan speed, automatically adjusts according to CPU temperature change, and reduces energy consumption and noise. Easy Installation: Easy installs, compatibles with wide motherboards and CPU specifications, users can quickly complete assembly. Low noise operation: adopts a low noise design, which provides a quiet working environment with low noise during operation. Specifications: Item： PWM CPU Fan Led ：Yes Material. Metal + Plastic Size: ablout 12cm/4.72in Color：Black/White Speed: 800-1800RPM Wind: 76CFM Power：DC12V 4Pin Package Includes: 1Set CPU Cooling Fan note: Due to the problem of lighting effect and shooting, there might be tolerances in product, please understand. Please allow 0-1cm error due to themanual measurment.