Apple PowerBook Duo Dock (including Duo Dock Plus) - Manual (Page 22)

Trouble?
m The dock doesn’t eject the PowerBook.
The dock may be locked. Unlock it by turning the key to the vertical
(unlocked) position, and press the eject button again.
There may be no power to the dock. To eject the PowerBook manually,
insert the dock’s key, a small screwdriver, or a similar object into the square
hole on the side of the dock and press firmly. The dock is released, and
you can gently pull the PowerBook from the slot.
When the dock is locked, you can’t use the square hole.
WARNING Manually ejecting the PowerBook Duo when it is running can
damage your system. Check that your PowerBook is turned off before
manually ejecting it.
Manual eject hole
16 Chapter 1