Second RAM slot?

I've managed to upgrade my Powerbook from 512mb to 1.25gb of RAM, by replacing the 256mb RAM chip in the underside compartment that's held down by 4 screws. Where is the other 256mb RAM chip, and would I be able to replace that?
Message was edited by: DancingRuRu

DancingRuRu:
Welcome to Apple Discussions.
Your PB has a maximum RAM capacity of 1.25 GB. There is one user installable slot in which you can put up to a 1 GB module. As Slicecom has previously noted you have 256 MB Logic Board RAM.
Good luck
cornelius

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