Sony VGN-SZ200 - Manual (Page 151)

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Upgrading Your VAIO Computer
9 Slide the memory module into the memory module slot and push it in until it clicks into place.
!
Do not touch any other components on the motherboard.
Do not damage the inner film cover equipped for module protection.
10 Replace the memory module compartment cover.
11 Tighten the screws on the bottom of the computer.
12 Reinstall the battery and turn on the computer.