Compaq Armada 4200 Reference Manual page 44

You can connect your computer to an electrical outlet with the AC
Adapter that came with your computer. To connect the AC
Adapter:
1. Connect the small end
Adapter.
2. Connect the AC Adapter to the AC power connector .
If the computer is attached to a Mobile CD Expansion Unit
NOTE:
(MCD), connect the AC Adapter to the MCD. If the computer
(either alone or with the MCD) is docked in the convenience base,
connect the AC Adapter to the convenience base.
3. Plug the power cord into a wall outlet .
4. Turn on the computer.
Do not place anything on power cords or cables. Arrange
NOTE:
them so that no one may accidentally trip on them. Do not pull on
a cord or cable. When unplugging from the electrical outlet, grasp
the cord by the plug.
Connecting an AC Adapter to the Computer
Keep the battery packs in the computer while you're using
NOTE:
AC power. This supplies the battery packs with a constant charge.
When the battery indicator light turns off, the battery packs are
charged.
5-8 Managing Power
of the AC power cord into the AC