Lenovo G455 Notebook - Manual (Page 41)

Chapter 6. Upgrading and replacing devices
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If two SO-DIMMs are already installed in the memory slot, remove one of them to make
room for the new one by pressing out on the latches on both edges of the socket at the same
time. Be sure to save the old SO-DIMM for future use.
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Insert the notched end of the DIMM into the socket.
Press the DIMM firmly, and pivot it until it snaps into the place. Make sure that it is firmly
fixed in the slot and does not move easily.
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Reinstall the compartment cover.
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Reinstall the battery.
0 Turn the computer over, and reconnect the AC adapter and the cables to the computer.
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