Acer Altos R720 Series - Manual (Page 100)

3 System upgrade 90
To install the SAS/SATA backplane board:
1 Observe the ESD precautions and pre-installation instructions
described on page 35.
2 Remove the air baffles. See “To remove the small air baffle”
section on page 45.
3 Make sure all hot-plug HDD carriers are removed from the drive
bay. For instructions, see “To remove a HDD” section on page 48.
4 Hold the backplane board only by the edges. Do not push or pull
on any components on the backplane. Set the backplane in place
at the front of the server system, with the sides of the board
resting in the guides at the left and right sides of the server unit.
5 Slide the backplane board into the server system guides at the left
and right sides of the server system until the pins at the left and
right sides of the backplane bracket are fully inserted into the
matching holes in the server system.
6 Observe the post-installation instructions described on page 36.