Toshiba A100 VA3 - Satellite - Pentium Dual Core 1.6 GHz Maintenance Manual page 209

4 Replacement Procedures
2. Push down the memory module until it is latched firmly
Caution: The power must be turned off when you insert the memory module. Inserting a
memory module with the power on risks damaging the module or the computer
itself.
Never press hard or bend the memory module.
4-22
4.9 Memory module
PORTEGE A100 Maintenance Manual (960-460)