The expansion bays in the PowerBook G3 Series are not the same as those in the PowerBook G3 and PowerBook 3400 computers. Expansion bay modules designed for earlier PowerBook computers will not fit in the expansion bays of the PowerBook G3 Series.
The left expansion bay accepts both floppy drives and PowerBook G3 Series batteries. The right expansion bay accepts PowerBook G3 Series batteries and the wider 5.25-inch CD-ROM drive, DVD-ROM drive, and Zip drives. When a smaller device is inserted, the expansion bay flip door covers the empty part of the bay.
Expansion bay modules may be removed while the PowerBook is turned on, in sleep, or shut down. Modules should not be swapped while the computer is starting up.
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