The PowrBook G4 12” can hold one only additional SO-DIMM module: 200 pins, PC2100-PC2700, from 266 to 333MHz, up to 1GB of capacity. Preparation Uplug power supply, shut down the Powerbook and place it on a smooth and clean surface. 
Remove the battery Put the PowerBook face down, and remove the Battery 
Access RAM bay Using a Philips #0 screwdriver, remove the 4 screws in yellow in the picture 
Here it is the RAM bay 
Unlock SoDimm module Acting on SoDimm sides, unlock the previous module (if any) 
Extract SoDimm RAM module Once RAM module has been freed, extract it. 
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⌘ Marco Balestra (operator, author) 
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