Acer AT350 F1 - Manual (Page 40)

3 System upgrades 28
Opening the server
Caution: Before you proceed, make sure that you have turned off
the system and all peripherals connected to it. Read the
Pre-installation instructions section on page 26.
You need to open the server before you can install upgrade
components. The left side panel is removable to allow access to the
server’s internal components. Refer to the following sections for
instructions.
Removing and installing the side panel
Removing the side panel
1 Observe the ESD precautions described on page 26.
2 Observe the pre-installation instructions described on page 26.
3 Remove the two screws (1) on the rear edge of the side panel.
4 Slide and hold the locking switch (2).