Apple PowerBook G3 Series - Manual (Page 7)

Take Apart Expansion Bay Modules - 6
Note:
If you do not wish to
open the display all the way,
open the display to a 90°
angle. This will prevent the
computer from tipping over
when the expansion bay
modules are removed.
2 Pull the expansion bay
eject arm toward you to
eject the module.
3 Slide the module out of
the expansion bay.