Dell POWEREDGE C6105 - Manual (Page 7)

Getting Started With Your System | 7
1 Align the end pieces of the rails on the vertical rack flanges to seat
the pegs in the bottom hole of the first U and the top hole of the
second U. Engage the back end of the rails until the latches lock in
place.
NOTE: The rails can be used in both square-hole (item 1 in the following figure)
and round-hole racks (item 2 in the following figure).
Figure 1. Pushing the Latch Release Buttons
2 Repeat Step 1 to position and seat the front end pieces on the vertical
flanges.
NOTE: To remove the rails, pull on the latch release button on the end piece
midpoint and unseat each rail.
3 Slide the system into the rack.
4 If present, remove the chassis stabilizer shipping bracket (optional)
from the rack.
NOTE: To transport systems already installed in the rack, ensure that the two
chassis stabilizer shipping brackets (optional) are in place.