Compaq Prolinea Family Maintenance & Serice Manual page 114

Reverse the above procedure to install a bezel.
NOTE: The 1/6-height bezel is always installed directly below the diskette
drive.
Chapter 5.9 Drive Cage Lock
The drive cage lock snaps into place in the hole provided on the top
surface of the drive cage. To replace the lock assembly, it is not
necessary to remove any of the mass storage devices from the drive cage.
To remove and replace the drive cage lock assembly, complete the following
steps.
1. Complete the steps in Section 5.3 to prepare the computer for
disassembly.
2. Complete the steps in Unit Cover Removal and Replacement in Section 5.4
to gain access to the drive cage assembly.
3. Remove the original drive cage lock assembly if it is still installed.
If the lock assembly does not separate easily, it may be necessary to
pry it out. A flat bladed screwdriver is an acceptable tool.