The first arrow will point in the direction of the airflow ... adequate cooling for every component of your PC. 4-fan setup: ...

A motor-driven fan that is part of the computer case. Contrast with fans that are attached to the CPU or graphics chips. See fan and CPU cooler. THIS DEFINITION IS FOR PERSONAL USE ONLY.

An electric fan that blows hot air out of a computer case, A/V equipment case or other electronic equipment. Typically temperature controlled, the fan speed can be adjusted as needed. More than ...