?High Performance Cooling Fan? Automatic speed control of the motherboard through the 4PIN PWM fan cable interface, which can determine the speed according to the temperature of the motherboard, with a maximum speed of 2200RPM. ?Dimensions of Silent Fan? Size: 92*92*25mm, Speed: 2200RPM±10%, Noise ?23.85dBA Connector: 4pin pwm, wind pressure: 1.98mm H2O,Air Flow: 32.77CFM (MAX), Higher air flow for improved cooling performance. ?High performance for heat dissipation?Noise-reducing 7-blade design, speed up to 2200RPM, four corners of the cooling fan with soft silicone feet, so that the pwm fan obtains high heat dissipation and low noise combination performance. ?Detail optimization?The PC fan adopts UL CLASSA insulation grade industrial-grade strength PBT+PC material, with a cable up to 55CM, and supports PWM series control of the case fan. [Perfect match] The cpu fan can not only be used as a case fan, but also suitable with downward coolers to cooling down CPU jointly aim at maximized heat dissipation performance; Ideal for cases, radiators and CPU coolers. Easy to install, can be combined with instructions or installation tutorials.