Sony PCG-GRX690P Primary User Manual page 175

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.
Do not touch any part of the motherboard or the other components inside the
computer.
Installing a New Memory Module
3 Snap the connectors into place when the board is correctly seated, and close
the computer cover.
4 Replace the fastening screws on the bottom of the computer.
5 Make sure the system memory matches the amount of installed memory. See
"Confirming added memory capacity" for more information.
Upgrading Your Computer's Memory
175