While your installation partner is supporting the system’s weight, perform the
following steps:
5. Attach the two rack mount blades (B) to the back side (FRU side) of the rack by
inserting four M6 screws (E) in the designated cage nuts. Do not tighten the screws
yet.
Attaching the Brackets to the Rack
Note
While each rack U (unit) consists of three holes, the cage nut
should be installed vertically with its ears engaging the top and
bottom holes only.