Acer Altos R910 Series - Manual (Page 70)

3 System upgrade 60
5.25-inch drive
The 5.25-inch drive bay allows you to install additional drives such as
another backup hard drive, CD-ROM drive, or a tape drive. These
options provide the system with additional storage capacity.
Installing a 5.25-inch drive
1 Observe the ESD precautions and pre-installation instructions
described on page 33.
2 Push the tabs on both sides of the carrier filler panel (A).
3 Hold the tabs in while pulling the carrier filler panel from the bay
(B).
4 Remove the screws that attach the slide rails to the filler panel.
5 Attach the slide rails to the device, then secure it with screws you
removed earlier.
6 Attach the Y-power cable to the rear of the device.