support.dell.com Introduction 1-7
reduction in electricity usage can reduce emissions of carbon dioxide, the gas prima-
rily responsible for the greenhouse effect, and sulfur dioxide and nitrogen oxides,
which are the two primary causes of acid rain.
Computer users can also help to reduce electricity usage and its side effects by turn-
ing off their computer systems when they are not in use for extended periods of
time—particularly at night and on weekends.
%!)
Dell offers the following upgrade options:
Additional batteries
External pointing devices, keyboards, and a numeric keypad
External monitors
External speakers, headphones, and microphones
Printers
Hard-disk drives
DVD-ROM drives
SuperDisk LS-120 drives
AC adapter
PC Cards
Carrying case
To order any of these options or upgrades, call Dell. For instructions, see Chapter 5,
“Getting Help”, or the “Contacting Dell” section of the system Help.
If at any time you do not understand a procedure described in this guide, or if your
computer does not perform as expected, Dell provides a number of tools to help you.
For more information, see Chapter 5, “Getting Help.”
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