User's Manual

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CAUTION:SafetyInstructions
Dell™OptiPlex™SX270SystemsUser'sGuide
General
WhenUsingYourComputer
When Working Inside Your Computer
Protecting Against Electrostatic Discharge
Ergonomic Computing Habits
Battery Disposal
Use the following safety guidelines to help ensure your own personal safety and to help protect your computer and working environment from potential
damage.
General
l Do not attempt to service the computer yourself unless you are a trained service technician. Always follow installation instructions closely.
l To help prevent electric shock, plug the computer and device power cables into properly grounded electrical outlets. These cables are equipped with 3-
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 3-wire cable with properly grounded plugs.

l To help avoid the potential hazard of electric shock, do not use your computer during an electrical storm.
l To help avoid the potential hazard of electric shock, do not connect or disconnect any cables or perform maintenance or reconfiguration of this product
during an electrical storm.
l If your computer includes a modem, the cable used with the modem should be manufactured with a minimum wire size of 26 American wire gauge
(AWG) and an FCC-compliant RJ-11 modular plug.
l Before you clean your computer, disconnect the computer from the electrical outlet. Clean your computer with a soft cloth dampened with water. Do
not use liquid or aerosol cleaners, which may contain flammable substances.
l To help avoid possible damage to the system board, wait 5 seconds after turning off the computer before disconnecting a device from the computer.
l To avoid shorting out your computer when disconnecting a network cable, first unplug the cable from the network adapter on the back of your
computer, and then from the network jack. When reconnecting a network cable to your computer, first plug the cable into the network jack, and then
into the network adapter.
l To help protect your computer from sudden, transient increases and decreases in electrical power, use a surge suppressor, line conditioner, or
uninterruptible power supply (UPS).
l Ensure that nothing rests on your computer's cables and that the cables are not located where they can be stepped on or tripped over.
l Do not push any objects into the openings of your computer. Doing so can cause fire or electric shock by shorting out interior components.
l Keep your computer away from radiators and heat sources. Also, do not block cooling vents. Avoid placing loose papers underneath your computer; do
not place your computer in a closed-in wall unit or on a bed, sofa, or rug.
l Do not spill food or liquids on your computer. If the computer gets wet, consult "Repairing a Wet Computer."
l Do not use your computer during an electrical storm unless the AC adapter cable has been disconnected from the electrical outlet.
l When you use the AC adapter to run the computer or to charge the battery, place the AC adapter in a ventilated area, such as a desk top or on the
floor.
l The AC adapter may become hot during normal operation of your computer. Use care when handling the adapter during or immediately after
operation.
WhenUsingYourComputer
As you use your computer, observe the following safe-handling guidelines.
l Your computer is equipped with one of the following:
CAUTION: Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, and so on)
removed.