Power Adapter Safety; Cleaning And Maintenance - Huawei HG552e Quick Start Manual

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regulations and laws, and may be dangerous. Please contact your retailer for
information about the availability of approved accessories in your area.
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The maximum voltage/current output from the USB port is 5 V/1 A. That is, the input
voltage/current of the USB device connected to the USB port cannot exceed 5 V/1 A.
Otherwise, the device may not work correctly.

Power adapter safety

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The power plug is intended to serve as a disconnect device.
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For pluggable devices, the socket-outlet shall be installed near the devices and shall be
easily accessible.
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Unplug the power adapter from electrical outlets and the device when not in use.
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Do not drop or cause an impact to the power adapter. If it is damaged, take it to an
authorized service center for inspection.
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If the power cable is damaged (for example, the cord is exposed or broken), or the plug
loosens, stop using it at once. Continued use may lead to electric shocks, short circuits,
or fire.
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Do not touch the power cord with wet hands or pull the power cord to disconnect the
power adapter.
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Do not touch the device or the power adapter with wet hands. Doing so may lead to short
circuits, malfunctions, or electric shocks.
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If your power adapter has been exposed to water, other liquids, or excessive moisture,
take it to an authorized service center for inspection.
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Ensure that the power adapter meets the requirements of Clause 2.5 in IEC60950-1/
EN60950-1 and has been tested and approved according to national or local standards.

Cleaning and maintenance

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During storage, transportation, and operation of the device, keep it dry and
protect it from collision.
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Keep the device and accessories dry. Do not attempt to dry it with an external heat
source, such as a microwave oven or hair dryer.
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Do not expose your device or accessories to extreme heat or cold. These environments
may interfere with proper function and may lead to fire or explosion.
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Avoid collision, which may lead to device malfunctions, overheating, fire, or explosion.
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If the device is not going to be used for an extended period of time, power it off, and
remove all cables connected to it.
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If anything unusual occurs (for example, if the device emits smoke or any unusual sound
or smell), immediately stop using it, power it off, remove all cables connected to it, and
contact an authorized service center.
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Do not trample, pull, or excessively bend any cable. Doing so may damage the cable,
causing the device to malfunction.
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Before you clean or maintain the device, stop using it, stop all applications, and
disconnect all cables connected to it.
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Do not use any chemical detergent, powder, or other chemical agents (such as alcohol
and benzene) to clean the device or accessories. These substances may cause
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