Apple Macintosh PowerBook 1400 - Manual (Page 33)

5 While holding the latch open, grasp the module by its gripping surface and pull it out of
the computer.
IMPORTANT You should not remove an expansion bay module if it is in use or
you may lose data. If you try to remove the module when it is in use, you’ll
see a message telling you to reinsert it. Reinsert the module, quit any files
or programs that may be using the floppy disk or CD (or other medium
inserted in the module), and then drag the disk’s icon to the Trash or choose
Put Away from the File menu. Then put the computer in sleep (or shut it
down) and remove the module.
1 Slide and hold the latch on
the underside of the computer.
2 Hold the module
by the gripping surface and
pull it completely out of the computer.
WARNING If you remove a module while using the power adapter, be
careful not to tilt the computer on end or let its weight rest on the
adapter’s connector.
33 Using Expansion Bay Modules and PC Cards