Epson 3865X Plus - Manual (Page 200)

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.
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
Installing and Removing Disk Drives
B-9