Dell PowerEdge 1950 Installation Manual page 18

2 Push the mounting rail forward until the mounting hook enters the square hole, and then push down
on the mounting-bracket flange until the mounting hook seats and the push button extends through
the lower square hole (see Figure 1-7).
3 At the back of the cabinet, pull back on the mounting-bracket flange until the mounting hook enters
the upper square hole, and then push down on the flange until the mounting hook seats and the push
button extends through the lower square hole.
4 Repeat step 1 through step 3 for the mounting rail on the other side of the rack.
5 Confirm that the mounting rails are mounted at the same vertical position on both sides of the rack.
Installing the VersaRails Mounting Rails
1 At the front of the rack cabinet, position one of the mounting rails so that its mounting-bracket flange
fits between the marks you placed (or numbered locations) on the vertical rails in "Marking the Rack"
(see Figure 1-8).
The three holes on the front of the mounting-bracket flange should align with the holes between the
marks you made on the front vertical rail.
2 Install two 10-32 x 0.5-inch flange-head Phillips screws in the upper and lower holes in the mounting-
bracket flange to secure the mounting rail to the front vertical rail.
3 At the back of the cabinet, pull back on the mounting-bracket flange until the mounting holes align
with their respective holes on the back vertical rail.
4 Install two 10-32 x 0.5-inch flange-head Phillips screws in the upper and lower holes in the mounting-
bracket flange to secure the mounting rail to the back vertical rail.
5 Repeat step 1 through step 4 for the mounting rail on the other side of the rack.
6 Ensure that the mounting rails are mounted at the same position on the vertical rails on each side
of the rack.
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Four-Post Rack Installation