Acer Altos G540 M2 - Manual (Page 72)

3 System upgrade 62
Configuring a 5-25 inch storage device
The three 5.25-inch device bays support a variety of storage devices for
additional storage capacity and scalability. Go to page 4 for a list of
supported storage devices.
By default, the system ships with a DVD-ROM drive installed on the
topmost device bay. You can choose to replace these default drives, or
you can install a new storage device on the second device bay.
To install an optional storage device:
1 Perform the pre-installation instructions described on page 41.
2 Remove the two screws that secure the cover of the empty
5.25-inch drive bay (1), then detach the cover (2).
Keep this cover for future reinstallation.
3 Install the new 5.25-inch storage device.
The instructions given below apply to a regular 5.25-inch storage
device.