Apple G4 17-inch - Manual (Page 25)

Getting to Know Your Computer 25
Memory slots
Your PowerBook comes with two memory slots, one above the other. The lower slot
contains the memory module that came with your PowerBook. You can install an additional
memory module in the upper slot. (If you ordered your PowerBook with additional
memory, the upper slot may already be filled.) The maximum amount of RAM you can
install in your PowerBook is 1 gigabyte (GB), using a 512 megabyte (MB) memory module
in each slot. For instructions, see “Installing Additional Memory” on page 65.
Battery
Your PowerBook comes with a battery that provides power when the external power
adapter is not connected. For more information, see page 53.