The Corsair Air Series LED PC case fans combine efficient, quiet airflow with impressive LED lighting. The specially designed blades are engineered to provide high airflow with less noise and turbulence than traditional case fans. Translucent with a frosted texture, they create a dramatic effect through the light of the four LEDs. The Air Series AF fan models perform exceptionally well in unrestricted spaces with at least 3 cm of clearance and are ideal for mounting at the rear or top of your PC case as exhaust fans for the motherboard and CPU, graphics accelerators, and other components that heat up your case. They also work well in areas like side panels or bottom air inlets as unrestricted intake fans. For highly restricted areas such as hard drive cages or other tight spaces with less air volume, the Air Series SP models are suitable for high static pressure fans. The Air Series AF fan models are designed to outperform standard case fans. The blades are specifically shaped for optimal airflow and are ultra-thin to produce less noise and turbulence. The enclosed bearing system reduces vibrations and ensures quiet operation.