Corsair Air Series LED high airflow PC case fans combine efficient, low-noise airflow with striking LED lighting. The custom-molded blades are designed for high-volume air delivery with less noise & turbulence than typical case fans. They're translucent, with a frosted texture, so the light from the four LEDs adds a dramatic effect. Air Series AF fan models perform best in unrestricted spaces with at least 3 cm of clearance, & they're ideal for mounting at the rear or top of your PC case as exhaust fans for your PC's motherboard & CPU, graphics accelerators, & other components that fill the case with heat. They work equally well as unrestricted intake fans for areas like side panels or bottom intakes.