Extreme Networks 9920 Installation Manual page 40

Install an AC Power Supply
four contiguous slots starting from the left-hand side to the bottom and the rear of the chassis. They are
numbered PSU 1 through PSU 4.
Note
Do not remove the cover from the fifth, or last, power supply slot on the far right to the
bottom and the rear of the chassis.
The AC power supply does not ship installed and must be ordered separately.
Note
Electrostatic discharge (ESD) can damage electronic circuits. Do not touch electronic hardware unless
you wear a grounding wrist strap or other static-dissipating device.
1. Identify the power supply slot in the chassis to install the power supply module, and remove the filler
panel, if necessary.
2. Verify that the power supply is right side up by orienting the power supply so that the green tabbed
release lever is on the right-hand side.
3. Slide the power supply into the power supply slot, until the release lever locks the power supply in
place and the power supply is properly seated.
Figure 17: Inserting an AC power supply into the Extreme 9920
4. Connect the AC power cord and secure it using the retention clip as the provided cable
management.
5. Repeat these steps for each power supply.
40 9920 Network Packet Broker Hardware Installation Guide
Install the Device and the Components