Lenovo S40-40 All-in-One - Manual (Page 58)

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User Guide
5. Remove the screw that secures the memory shielding, then lift up the memory
shielding to remove it.
6. Remove any parts and disconnect any cables that might obstruct your access
to the memory slots.
7. If you are installing a memory module, go to step 8. If you are replacing a
memory module, open the latches and gently pull the memory module out of
the memory slot as shown.