Texas Instruments TravelMate 4000M User Manual page 32

Installing Extra RAM
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Replace the plastic cover and re-install the screw.
Check RAM by turning off Quickboot in Setup and ensuring that all
memory is recognized at powerup.
After installing the RAM expansion board, check that all system
memory is recognized by turning off QuickBoot in the System Setup.
Memory is automatically checked at powerup.
Replacing the screw