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Removing the BBU Cage from the Faceplate
Follow these steps to remove the BBU cage from the faceplate:
Step 1
Use a T15 Torx driver to remove the six M3.5 screws that attach the BBU cage to the faceplate. Do not discard the screws.
Step 2
Remove the BBU cage or assembly from the faceplate.
Installing BBU Assembly or Blank to the Router
Follow these steps to install the BBU assembly or blank to the router:
Cisco Catalyst IR8140 Heavy Duty Series Router Hardware Installation Guide
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Installing Battery Backup Units
Removing the BBU Cage from the Faceplate