HP Compaq Presario,Presario 700 User Manual page 49

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are keyed. When inserting the memory module into its socket,
ensure that the module is correctly aligned with the socket.
8. Replace the memory compartment cover and secure it with
the retaining screw. Press down on the dimples located at
both edges of the cover (nearest the retaining screw) to snap it
in place.
Mobile Internet PC User's Guide
Presario 700 Series
The memory module socket and memory module
Common Tasks
4–9