?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. ?Vibration Damping and Low Noise? Four vibration damping pads around the fan reduce the vibration friction caused by PC fan rotation, perfectly reducing noise and allowing low noise operation. ?Quality Bearings? Carefully developed, solving the problem of shaking fan blades in lifting mode with durability, quality S-FDB V2 bearings keep fan noise to a minimum while providing maximum cooling performance when needed and extending the life of the case fan. ?Dimensions of Silent Fan? Size: 80*80*25mm, Speed: 2200RPM±10%, Noise ?24dBA Connector: 4pin pwm, wind pressure: 2.7mm H2O,Air Flow: 34CFM (MAX), Higher air flow for improved cooling performance. [Perfect Match] The ultra-thin 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.