Compaq ProLiant 5500 Setup And Installation Manual page 49

3-10 Rack-Mount Server Installation
Figure 3-4.
2. Put the server rails to one side. You will attach them to the rack server
chassis later, in the section, "Attaching Server Rails."
The next figure shows the separated bracket rail with its inner sliding piece and
the flat, one-piece server rail.
Figure 3-5.
Removing the server rail from the bracket rail
Separated bracket rail (top) and server rail
For use with Intel Pentium II Xeon processor-based servers only