Apple PowerBook (3400 series) - Manual (Page 13)

3 Adjust the elevation feet to raise the computer.
The back of the keyboard is slightly elevated when the feet are in use.
It is a good idea to lower the elevation feet whenever you are using your
computer on a flat surface.
Removing the battery label
Most new PowerBooks are shipped with a label covering the battery to
protect it from losing its charge completely. If there is a label, you need to
remove it before the battery will provide power for the computer.
1 With the display open, peel off the part of the label on the computer’s case, taking care
not to tear the label.
2 Close the display (with the detached part of the label outside of the computer).
To lower the foot, press the release
button. The foot extends automatically. To raise the foot, press the release button while
pushing up on the foot until it clicks into place.
13 Getting Started