Do any iMac G4's have little phillips screws on the bottom plate that you take off to replace the RAM, or do ALL iMac G4's have screws that you can only unscrew with a T15 screwdriver? The iMac in question is an iMac G4 1GHz pc 2100. Thanks.
That would be to replace the built-in RAM, not the user-serviceable RAM. For the user-serviceable RAM, you simply remove that little door with the phillips screws.