Huawei Technologies Co. Ltd HG552E Benutzerhandbuch

regulations and laws, and may be dangerous. Please contact your retailer for 
information about the availability of approved accessories in your area.

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.

The power plug is intended to serve as a disconnect device.

For pluggable devices, the socket-outlet shall be installed near the devices and shall be 

easily accessible.

Unplug the power adapter from electrical outlets and the device when not in use.

Do not drop or cause an impact to the power adapter. If it is damaged, take it to an 

authorized service center for inspection.

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.

Do not touch the power cord with wet hands or pull the power cord to disconnect the 

power adapter.

Do not touch the device or the power adapter with wet hands. Doing so may lead to short 

circuits, malfunctions, or electric shocks.

If your power adapter has been exposed to water, other liquids, or excessive moisture, 

take it to an authorized service center for inspection.

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.

During storage, transportation, and operation of the device, keep it dry and 

protect it from collision. 

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. 

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. 

Avoid collision, which may lead to device malfunctions, overheating, fire, or explosion. 

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.

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.

Do not trample, pull, or excessively bend any cable. Doing so may damage the cable, 

causing the device to malfunction.

Before you clean or maintain the device, stop using it, stop all applications, and 

disconnect all cables connected to it.

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