Acer Altos R5250 - Manual (Page 56)

3 System upgrade 38
Installing and removing a slim-line optical drive
Note: The slim-line optical drive is not hot-pluggable. Before
removing or replacing the drive, you must first power down the
server, unplug the AC power cord from the system, and turn off all
peripherals devices connected to the server.
To install a slim-line optical drive:
1 Perform the pre-installation instructions described on page 28.
2 Remove the access panel.
(1) Remove the eight screws that secure the access panel to the
chassis (A).
(2) Slide the access panel toward the back of the chassis, then pull
the panel away from the chassis (B).
(3) Put the access panel aside for reinstallation later.