Dell KVM 1082DS - Manual (Page 31)

Installation xxx | xxx 21
screws from each flange ear and remove each casting (Figure 2.4, item 1).
Retain castings for future rack requirements.
2 For each rail, attach the front and rear flanges to the post flanges with two
user-supplied screws at each end (item 2).
Figure 2.4: Four-post Threaded Configuration