Was trying to find information regarding the RAM for my particular model of G4 Powerbook because I planned to upgrade the puny amount of RAM (512MB in total, 256MB soldered) that came with the machine, and happened on the following DIY sites. Very helpful, I must say. As an example, here are illustrated guides for upgrading the RAM.
- Steps for RAM upgrade from ifixit
- Another guide from Macinstruct
- All you’d want to know about RAM for Powerbooks