Cisco NCS 4000 Series Hardware Installation page 195

Installing Power Components
Procedure
Step 1 Remove the filler caps from the slots where you want to install the power modules.
Step 2 Using two hands to support the power module, slide it into the power tray.
Figure 92: Example of Inserting the AC Power Module
Installing AC or DC Power Modules
Hardware Installation Guide for Cisco NCS 4000 Series
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