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1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer.
2. Close the computer display, and turn it over.
3. Remove the battery. For details, refer to the instructions in “Replacing the battery” on page 119.
4. Remove the keyboard. For details, refer to the instructions in “Replacing the keyboard” on page 130.
5. Remove the SO-DIMM already installed in the slot by pressing out on the latches on both edges of the
socket at the same time. Be sure to save it for future use.
Note: If an SO-DIMM is installed in the upper slot, and you need to replace the SO-DIMM in the lower
slot, remove the SO-DIMM from the upper slot rst. Be sure to reinstall it in the upper slot after you
replace the SO-DIMM in the lower slot.
6. Find the notch on the contact edge side of the SO-DIMM you are installing.
Attention: To avoid damaging the SO-DIMM, do not touch its contact edge.
146 User Guide