Extreme Networks 8820 Hardware Installation Manual page 59

Remove and Replace Components
Figure 29: Remove PSUs and fan modules
2. Use a Phillips #1 screwdriver to loosen the chassis screw.
Figure 30: Chassis switch screw front-to-back airflow
3. Use a flathead screwdriver to change the chassis switch. The following figure is an example of
changing front-to-back airflow to back-to-front airflow.
Change Airflow Direction
Extreme 8820 Hardware Installation Guide 59