NEC N8100-1447F User Manual page 220

9-10 Upgrading Your Server
4.
Remove the front mask to the left to release the tabs on the front mask from the server.
5.
Position the server until on its right side.
Installation
The front mask can be installed in the reverse order of the removal. Insert the three tabs at the right
end of the front mask into the holes on the front of the server, press the left end of the front mask to
the server, and lock the mask with the release tabs.