Lenovo NONE FOUND 3000 V100 Service And Troubleshooting Manual page 36

Replacing memory
2. Turn off the computer; then disconnect the ac adapter and all cables
3. Close the computer display, and turn the computer over.
4. Remove the battery.
5. Unfasten the two screws 1 on the cover of the memory slot, and
6. If the SO-DIMM is already installed in the memory slot, remove it to
7. Find the notch on the contact edge side of the SO-DIMM.
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Lenovo 3000 V100 Service and Troubleshooting Guide
from the computer.
remove the cover 2 .
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 it for future use.
Attention: To avoid damaging the SO-DIMM, do not touch its contact
edge.