NEC Express5800/120Ri-2, User Manual

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Setting Up Your Server 3-9
Installing the Cage Nuts
Install three cage nuts on the front of the rack for each of the right and left sides and also two cage
nuts on the rear of the rack for each of the right and left sides.
Install three cage nuts in 1U (the minimum unit of rack height). Three slots (angle holes) are opened
per 1U of a rack. Install the cage nuts at the three slots. (For any NEC rack, round marks are put in
the unit of 1U.) For two cage nuts installed on the front of the rack, the upper and lower nuts are
used to fix the front of the rail assembly, and the center is used to support the setscrew of the server.
The cage nuts installed on the rear of the rack are used to fix the rear of the rail assemblies.
1U height
Hang either clip of a cage nut on a square hole on the rack and insert another clip into the hole by
using a tool such as a flat tip screwdriver.
NOTE:
Confirm that all the cage nuts are installed at the level.