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DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch
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Safety Instructions
Use the following safety guidelines to ensure your own personal safety and to help protect your system from potential damage.
Throughout this safety section, the caution icon (
) is used to indicate cautions and precautions that need to be reviewed and
followed.
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 the system documentation.
• Opening or removing covers that are marked with the triangular symbol with a lightning bolt may expose the user 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:
• Damage to the power cable, extension cable, or plug.
• 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 the operating instructions are correctly followed.
• Keep your system away from radiators and heat sources. Also, do not block cooling vents.
• Do not spill food or liquids on system components, and never operate the product in a wet environment. If the system gets
wet, see the appropriate section in the troubleshooting guide or contact your trained service provider.
• Do not push any objects into the openings of the system. Doing so can cause fire or 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 unsure of the type
of power source required, consult your service provider or local power company.
• To help avoid damaging the system, be sure the voltage selection switch (if provided) on the power supply is set to match the
power available at the Switch’s 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 AC-
powered option intended for your system, purchase a power cable that is approved for use in your country. The power cable
must be rated for the product and for the voltage and current marked on the product's electrical ratings label. The voltage and
current rating of the cable should be greater than the ratings marked on the product.