Air Series AF140 LED Red Quiet Edition. Corsair Air Series LED high airflow PC case fans combine efficient, low-noise airflow with striking LED lighting. The blades are custom-molded for optimal airflow, and they?re ultra-thin for less noise and turbulence. The sleeved bearing system reduces vibration for quiet operation. The fan blades are translucent, with a frosted texture, so the light from the four LEDs adds a dramatic effect.