Cisco Firepower 4110 Hardware Installation Manual page 69

Installation, Maintenance, and Upgrade
Figure 44: Remove the Power Supply Module
If the slot is to remain empty, install a blank faceplate to ensure proper airflow and to keep dust out of the chassis;
otherwise, install another power supply module.
Step 4 To replace a power supply module, hold the power supply module with both hands and slide it into the power supply
module bay.
Step 5 Push in the power supply module gently until you hear the latch engage and it is seated. Verify the power supply module
is operating correctly by checking the power supply module LED. See
of the power supply module LEDs.
Power Supply Modules, on page 21
Cisco Firepower 4110, 4120, 4140, and 4150 Hardware Installation Guide
Remove and Replace the Power Supply Module
for a description
65