Lenovo IdeaPad S205 - Manual (Page 41)

Appendix A. CRU instructions
37
8 Insert the notched end of the DIMM into the socket.
Press the DIMM firmly, and pivot it until it snaps into place. Make sure
that it is firmly fixed in the slot and does not move easily.
9 Reinstall the base cover and the keyboard.
0 Reinstall the battery.
A Turn the computer over, and reconnect the AC adapter and the cables to
the computer.
To make sure that the SO-DIMM is installed correctly, do as follows:
1 Turn the computer on.
2 Hold F2 during startup. The BIOS Setup Utility screen opens. The Total
Memory item shows the total amount of memory installed in your computer.