Acer AT350 F1 - Manual (Page 74)

3 System upgrades 62
Installing a memory module
Warning! Memory of the identical size, speed, and organization
must be installed in the same colored DIMM slots.
1 Observe the pre-installation instructions on page 26.
2 Remove the side panel described on page 28.
3 Lay the server on its side (components showing).
4 Locate the DIMM slot on the mainboard.
5 Install the memory module.
(a) Align then insert the DIMM into the socket (1).
(b) Push the DIMM to the socket until the retaining clips snap
inward (2).
Note: The DIMM slot is slotted to ensure proper installation. If you
insert a DIMM but it does not fit easily into the socket, you may
have inserted it incorrectly. Reverse the orientation of the DIMM
and insert it again.
6 Observe the post-installation instructions described on page 27.
The system automatically detects the amount of memory installed.
Run the BIOS setup to view the new value for total system memory
and make a note of it.