HP Compaq Presario,Presario V4000 Hardware And Software Manual page 172

Travel and Shipping
Do not expose the notebook or diskettes to a magnetic
security detector.
If you plan to use the notebook during a flight, check
with the airline in advance. In-flight notebook use is at
the discretion of the airline.
If your notebook has a GSM (Global System for Mobile
Communication) or GPRS (General Packet Radio Service)
device, you must turn off the device before boarding and keep
it turned off if you plan to use your notebook during the
flight.
If you are traveling internationally:
Ä
16–2
The security device that examines carry-on items placed
on a conveyor belt uses x-rays and is safe for the notebook
and diskettes.
The walk-through security device and the handheld
security wands are magnetic and may damage the
notebook or diskettes.
Consult a service partner or Customer Care about power
cord and adapter requirements for each location in which
you plan to use the notebook. (Voltage, frequency, and
plug configurations vary.) Refer to either your warranty
documentation or the Worldwide Telephone Numbers
booklet (English only) to contact Customer Care for help
and support.
To reduce the risk of electric shock, fire, or damage to the
equipment, do not attempt to power the notebook with a
voltage converter kit sold for appliances.
Check the computer-related customs regulations for each
country on your itinerary.
Hardware and Software Guide