Extreme Networks 8820 Hardware Installation Manual page 41

Install Your Switch
All installed power supplies must have the same airflow direction (front-to-back or back-to-front) and
must match the airflow direction of the installed fan modules.
Warning
To prevent an electrical hazard, make sure that the AC power cord is not connected to the
power supply before you install the power supply in the power supply bay.
Warning
Make sure that the AC power supply circuit is not overloaded. Use proper over-current
protection, such as a circuit-breaker, to prevent over-current conditions.
1. Remove a blank panel from the back of the switch if necessary.
2. Verify that the new power supply is right side up.
3. Verify that the new power supply's airflow direction (front-to-back or back-to-front) is compatible
with the other installed power supply (if any) and with the installed fan modules.
4. Carefully slide the power supply all the way into the power supply bay:
Figure 22: Installing a 1600 W AC Power Supply
5. Push the power supply in until the latch snaps into place.
Install a 1600 W Internal AC Power Supply
Extreme 8820 Hardware Installation Guide 41