According to your description, I suggest you refer to the following information:

Regarding the question you mentioned, I suggest you refer to the following information:

1. Turn the machine over and the battery will be beside you. First unplug the power adapter and take out the battery;

2. Push the battery unlock button to the bottom, and there will be a gap in the memory compartment cover of the machine;

3. Lift the memory compartment cover from the battery end;

4. Insert the memory to be added, and then tap the memory until the memory clip catches the memory.

5. Insert the memory hatch cover.

For details, please refer to pages 36 and 42 of the following instructions.

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