Acer Altos G540 Series User Manual page 69

(2) Firmly press the holding clips inward to lock the FDB in place.
If the holding clips do not close, the FBD is not properly
inserted.
6 Reinstall the air duct.
7 Observe the post-installation instructions described on page 38.
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.
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