Sony PCG-F640 VAIO User Guide (primary manual) User Manual page 82

VAIO Notebook User Guide
Typical expansion memory configuration
Total System Memory (MB)
128
192
256
To remove a memory module
1 Shut down your computer and disconnect all peripheral devices, such as your
printer.
2 Unplug the computer and remove the battery pack(s).
3 After the computer has cooled, loosen and remove the screw that secures the
cover of the memory bay on the bottom of your computer. Use an
appropriate screwdriver.
Removing the memory module cover
4 Touch a metal object (such as the connector panel on the back of your
computer) to discharge any static electricity.
82
Slot 1 (MB)
64
64
128
Slot 2 (MB)
64
128
128
screw