Acer AR180 F1 Series User Manual page 68

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1 Remove the memory module.
a Press the holding clips on both sides of the DIMM slot outward to
release the DIMM (1).
b Gently pull the DIMM upward to remove it from the DIMM slot (2).
2 If you intend to install a new memory module, refer to the
previous section.
To reconfigure the system memory:
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.
3 System upgrades