Dell PowerEdge C8000 Hardware Owner's Manual page 227

Align the stopping bracket to the back rack post and secure with the
i
three 10-32 screws. Apply 35 in-lbs of torque to the screws.
See Figure 4-4.
Figure 4-4. Installing the Stopping Bracket
1 stopping bracket
4 Attach the right rail and stopping bracket to the rack.
Use the same procedure to install the right rail and stopping bracket to the
right rack posts.
NOTE:
To remove the rails, press and hold on the rail release button on the end
piece midpoint and unseat each rail.
1
2 10-32 screws (3)
Rack Mount Configuration
2
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