Sony Vaio VGN-Z Series User Manual page 149

Removing and Installing a Memory Module
To change or add a memory module
1 Shut down the computer and disconnect all peripheral devices.
2 Unplug the computer and remove the battery pack.
3 Wait until the computer cools down.
4 Unscrew the screw (indicated by the arrow below) on the bottom of the computer and remove the memory module
compartment cover.
5 Touch a metal object to discharge static electricity.
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Upgrading Your VAIO Computer
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