Sony PCG-SRX77 - Manual (Page 94)

VAIO® Computer Quick Start
94
12 Install the memory module by sliding the module into the open slot.
13 Snap the connectors into place when the board is correctly seated.
14 Close the computer cover and replace the four (4) fastening screws on the
bottom of the computer.
Do not touch any part of the motherboard or the other components inside the
computer.
Installing New Memory Module