Is the AC Adaptor Plug and Play?

Can the powerbook be up or should it be shutdown when plugging the ac adaptor in and out of the powerbook? It seems that with a functional battery the voltages would be similar enough to avoid a glitch but I thought I would ask, this being my first notebook computer.

Hi, rtdrury, and welcome to Apple Discussions. You can connect or disconnect the AC adapter at any time, as long as your Powerbook's battery has some charge in it, without any harm of any kind. If you disconnect it while the computer is in use, the computer will instantaneously switch over to battery power, and no unsaved work will be lost.
The adapter should be plugged into a wall outlet before you plug it into the computer, and disconnected from the wall outlet after disconnecting it from the computer. Doing things in this order avoids discombobulating the power management unit in the Powerbook.

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