Cisco Firepower 4100 Series Hardware Installation Manual page 72

Remove and Replace the Power Supply Module
You can remove and replace power supply modules while the system is running.
Step 1 To remove a power supply module, face the back of the chassis and grasp the handle.
Step 2 Press the latch found on the lower right of the power supply to disengage the power supply.
Step 3 Place your other hand under the power supply module to support it while you slide it out of the chassis.
Figure 44: Remove the Power Supply Module
Cisco Firepower 4100 Series Hardware Installation Guide
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Maintenance and Upgrades