On one side, there may also be a plastic guide rail. Follow these steps to remove the mounting frames (and guide rail) from the drive:
1.If necessary, remove the screws securing the plastic guide rail and the metal grounding plate to one of the mounting frames, as shown below.
*<uide rail
\ \
grounding plate
2.Remove the four screws securing the mounting frames to the hard disk drive. There are two screws securing each frame, as shown below.
screws
\
‘*screws is,
Installing and Removing Disk Drives