Sony PCG-GRV550 - Manual (Page 142)

VAIO Computer Quick Start
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5 Touch a metal object (such as the connector panel on the back of your
computer) to discharge static electricity.
6 Remove the memory module by pulling out the tabs (see arrows No. 1), and
pulling out the module in the direction of arrow No. 2. See “To install a
memory module” for more information.
To install a memory module
1 Remove the existing memory module from the computer. See “To remove a
memory module” for more information.
2 Remove the new memory module from its packaging, and install the
memory module by sliding it into the open slot at a 45-degree angle.
Removing the Bottom Screws
Removing a Memory Module
Do not touch any part of the motherboard or the other components inside
the computer.
Screw
Screw
Driver