HP HPE Alletra 2140 Hardware Manual page 24

4. Secure the chassis to the rack.
The chassis has two handles. Each handle has a thumbscrew that holds the chassis to the rails so it does not slide out of
the rack. Tighten the thumbscrew in each handle until secure.
5. Secure the bezel to the front of the chassis.
a) Align the four retention pins on the bezel with the four mounting holes on the front of the chassis.
b) Press gently but firmly until the bezel snaps into place.
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Install the HPE Storage Array 24