Dell Precision Mobile Workstation M50, System Information Manual

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S y s t e m I n f o r m a t i o n G u i d e
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Dell computers are designed, tested, and classified for their intended
electromagnetic environment. These electromagnetic environment
classifications generally refer to the following harmonized definitions:
• Class A is typically for business or industrial environments.
• Class B is typically for residential environments.
Information Technology Equipment (ITE), including devices, expansion
cards, printers, input/output (I/O) devices, monitors, and so on, that are
integrated into or connected to the computer should match the
electromagnetic environment classification of the computer.
A Notice About Shielded Signal Cables: Use only shielded cables for
connecting devices
to any Dell device to reduce the possibility of
interference with radio communications services. Using shielded cables
ensures that you maintain the appropriate EMC classification for the
intended environment. For parallel printers, a cable is available from Dell.
If you prefer, you can order a cable from Dell on the World Wide Web at
accessories.us.dell.com/.
Most Dell computers are classified for Class B environments. However, the
inclusion of certain options can change the rating of some configurations to
Class A. To determine the electromagnetic classification for your computer
or device, see your User’s Guide specific information from each regulatory
agency. Each section provides country-specific EMC/EMI or product safety
information.
Battery Disposal
Your computer uses an lithium-ion battery and a nickel-metal hydride
(NiMH) reserve battery. For instructions about replacing the lithium-ion
battery in your computer, see “Using the Battery” in your Dell
User’s Guide .
The NiMH battery is a long-life battery, and it is very possible that you will
never need to replace it. However, should you need to replace it, the
procedure must be performed by an authorized service technician.
Do not dispose of the battery along with household waste. Contact your
local waste disposal agency for the address of the nearest battery deposit
site.