Sony PCG-FXA59 - Manual (Page 75)

Installing a Memory Module
1. Follow steps 1 to 4 of Removing a Memory Module for removing the preinstalled memory.
2. Remove the new memory module from its packaging.
3. Install the memory module by sliding it into the memory module slot. Press the module into place until it clicks.
Installing memory module
4. Tighten the screw on the cover of the memory bay.
Page 75