D-Link mydlink DCH-S220 User Manual page 22

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Appendix B - Safety Instructions
• Operate the device only from the type of external power source indicated on the electrical ratings label.
• To help avoid damaging your device, be sure the voltage selection switch (if provided) on the power supply is set to
match the power available at your location.
• 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 a power cable for your device or for any AC -powered
option intended for your device, purchase a power cable that is approved for use in your country and is suitable for use
with your device. The power cable must be rated for the device and for the voltage and current marked on the device's
electrical ratings label. The voltage and current rating of the cable should be greater than the ratings marked on the
• To help prevent an electrical shock, plug the device and peripheral power cables into properly grounded electrical
outlets. 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 3-wire cable with properly
grounded plugs.
• Observe extension cable and power strip ratings. Ensure that the total ampere rating of all products plugged into the
extension cable or power strip does not exceed 80 percent of the ampere ratings limit for the extension cable or power
• To help protect your device from sudden, transient increases and decreases in electrical power, use a surge suppressor,
line conditioner, or uninterruptible power supply (UPS).
• Do not modify power cables or plugs. Consult a licensed electrician or your power company for site modifications.
Always follow your local/national wiring rules.
• When connecting or disconnecting power to hot-pluggable power supplies, if offered with your device, observe the
following guidelines.
• Install the power supply before connecting the power cable to the power supply.
• Unplug the power cable before removing the power supply.
• If the system has multiple sources of power, disconnect power from the device by unplugging all power cables from
the power supplies.
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