Dell Precision 410 User Manual page 3

Use the following safety guidelines to help protect your computer system from poten-
tial damage and to ensure your own personal safety.
As you use your computer system, observe the following safety guidelines:
To help avoid damaging your computer, be sure the voltage selection switch on
the power supply is set to match the AC power available at your location:
— 115 volts (V)/60 hertz (Hz) in most of North and South America and some Far
Eastern countries such as Japan, South Korea, and Taiwan
— 230 V/50 Hz in most of Europe, the Middle East, and the Far East
Also be sure your monitor and attached peripherals are electrically rated to oper-
ate with the AC power available in your location.
To help avoid possible damage to the system board, wait 10 to 20 seconds after
disconnecting the system from AC power (until the standby light-emitting diode
[LED] on the system board goes out) before removing a component from the sys-
tem board or disconnecting a peripheral device from the computer.
To help prevent electric shock, plug the computer and peripheral power cables
into properly grounded power sources. These cables are equipped with
three-prong plugs to help ensure proper grounding. Do not use adapter plugs or
remove the grounding prong from a cable. If you must use an extension cable,
use a three-wire cable with properly grounded plugs.
To help protect your computer system from sudden, transient increases and
decreases in electrical power, use a surge suppressor, line conditioner, or un-
interruptible power supply (UPS).
Be sure nothing rests on your computer system's cables and that the cables are
not located where they can be stepped on or tripped over.
Do not spill food or liquids on your computer. If the computer gets wet, consult
your Diagnostics and Troubleshooting Guide.
Do not push any objects into the openings of your computer. Doing so can cause
fire or electric shock by shorting out interior components.
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