DGS-3024 Gigabit Ethernet Switch Manual
Safety Instructions
Use the following safety guidelines to ensure your own damage. Throughout this safety section, the caution icon ( review and follow.
personal safety and to help protect your system from potential 
) is used to indicate cautions and precautions that you need to
Safety Cautions
To reduce the risk of bodily injury, electrical shock, fire, and damage to the equipment, observe the following precautions.
Observe and follow service markings. Do not service any product except as explained in your system documentation. Opening or removing covers that are marked with the triangular symbol with a lightning bolt
may expose you to electrical shock. Only a trained service technician should service components inside these compartments.
If any of the following conditions occur, unplug the product from the electrical outlet and replace the part or contact your trained service provider:
–The power cable, extension cable, or plug is damaged.
–An object has fallen into the product.
–The product has been exposed to water.
–The product has been dropped or damaged.
–The product does not operate correctly when you follow the operating instructions.
•Keep your system away from radiators and heat sources. Also, do not block the cooling vents.
•Do not spill food or liquids on your system components, and never operate the product in a wet environment. If the system gets wet, see the appropriate section in your troubleshooting guide or contact your trained service provider.
•Do not push any objects into the openings of your system. Doing so can cause a fire or an electric shock by shorting out interior components.
•Use the product only with approved equipment.
•Allow the product to cool before removing covers or touching internal components.
•Operate the product only from the type of external power source indicated on the electrical ratings label. If you are not sure of the type of power source required, consult your service provider or local power company.
•To help avoid damaging your system, be sure the voltage selection Switch (if provided) on the power supply is set to match the 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 South Korea and Taiwan
–100 V/50 Hz in eastern Japan and 100 V/60 Hz in western Japan
–230 V/50 Hz in most of Europe, the Middle East, and the Far East
•Also be sure that attached devices are electrically rated to operate with the power available in your location.
•Use only approved power cable(s). If you have not been provided with a power cable for your system or for any
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