Sony PCV-RS402 Hardware Manual page 52

Upgrading your VAIO computer
6 To remove an existing memory module, release the end latches and gently lift out the module, as shown
(may vary from actual configuration).
7 To insert a new memory module, remove it from its anti-static package, handling it only by the edges.
8 Locate the notch on the bottom edge of the memory module.
9 Align the memory module over the slot, making sure the module is facing the correct way.
10 Press evenly against the memory module's upper corners. The end latches snap into position
automatically.
11 Reinstall any add-on cards or components you removed.
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