HP Compaq NC4000

2–4 Hardware and Software Guide
Power
Power Sources
The notebook can run on internal or external AC power. The
following table indicates the best power sources for common
tasks.
Task Recommended Power Source
Work in most software
applications
■ Charged battery pack in the
notebook
■ External power supplied through
one of the following devices:
❐ AC adapter
❐ Optional AC adapter
❐ Optional docking device
❐ Optional automobile or aircraft
adapter
Charge or calibrate a battery pack
in the notebook
External power supplied through
one of the following devices:
■ AC adapter
■ Optional AC adapter
■ Optional docking device
■ Optional automobile or aircraft
adapter
Install or modify system software
or write to a CD or DVD
External power supplied through
■ AC adapter
■ Optional AC adapter
■ Optional docking device