Caution: safety instructions, Caution: safety, Instructions – Dell OptiPlex GX260 User Manual
Page 220: Safety instructions, General
CAUTION: Safety Instructions
Dell™ OptiPlex™ GX260 Systems User's Guide
When Working Inside Your Computer
Protecting Against Electrostatic Discharge
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
Do not attempt to service the computer yourself unless you are a trained service technician. Always follow installation
instructions closely.
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.
To help avoid the potential hazard of electric shock, do not use your computer during an electrical storm.
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.
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.
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.
To help avoid possible damage to the system board, wait 5 seconds after turning off the computer before
disconnecting a device from the computer.
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.
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).
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.