Lenovo ThinkPad L420 User Manual page 110

4. Loosen the screws, and then remove the cover.
Attention: Do not touch any exposed parts other than those referred to in this procedure. Unnecessary
contacts with the electric and electronic components might cause your computer to malfunction.
5. If the two SO-DIMMs are already in the memory slots, release the latches on both edges of the socket
at the same time, and then remove the SO-DIMM to make room for the new one. Be sure to save
the removed memory for future use.
6. Find the notch on the contact edge side of the SO-DIMM.
Attention: To avoid damaging the SO-DIMM, do not touch its contact edge.
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User Guide