(VortexPro blade design)The air volume of 9 high-pressure fan blades can reach 42.67CFM at 1200 speed. The design of the blades can reduce drag, increase fan speed and further improve fan performance. DN-120 chassis fan is dedicated to improving performance, bringing stable air pressure and powerful air volume. (High-quality cooling fan)3M120FAN-AY black matte fan design is simple and low-key, effectively reducing light pollution. The sturdy and durable fan brings you a dual experience of heat dissipation and cooling. The safety speed of 1200 rpm can prevent cuts to hands and reduce safety hazards. (High-quality shock absorption)The 3M120FAN-AY fan is surrounded by eight soft silicone pads, which can absorb vibration at high speed. The maximum noise is only 22.93dBA, which is equivalent to the sound of fallen leaves. Let you refuse to be disturbed by noise at work or games. (High-efficiency hydraulic bearing)3M120FAN-AY fan adopts ultra-durable fluid dynamic bearing. Using a uniq