Input Power - HP 6520s - Notebook PC Getting Started

Input power

The power information in this section may be helpful if you plan to travel internationally with
the computer.
The computer operates on DC power, which can be supplied by an AC or a DC power source.
Although the computer can be powered from a standalone DC power source, it should be
powered only with an AC adapter or a DC power source supplied and approved by HP for use
with this computer.
The computer is capable of accepting DC power within the following specifications.
Input power
Operating voltage
Operating current
42 Appendix B Operating environment and input power
Rating
18.5 V dc @ 3.50 A - 65 W or 19.0 V dc @ 4.74 A - 90 W
3.50 A or 4.74 A