Sony VGN-S4HP/B User Manual page 128

To change or add a memory module to the memory module underneath the keyboard
1 Shut down your 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 two screws at the bottom of the computer.
5 Slide up the latches in the battery compartment to unlock the keyboard.
6 Turn over the computer upside down and lift open the LCD.
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Upgrading Your VAIO Computer