Dell PowerEdge C8000 - Manual (Page 227)

Rack Mount Configuration 227
i Align the stopping bracket to the back rack post and secure with the
three 10-32 screws. Apply 35 in-lbs of torque to the screws.
See Figure 4-4.
Figure 4-4. Installing the 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 stopping bracket 2 10-32 screws (3)
1 2