Huawei E8278 - Using the Power Adapter

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 Do not remove the microSD or SIM card when the card is in use. Otherwise, the card as
well as your USB Stick may get damaged and the data stored on the card may be
corrupted.
 Do not use any SIM card that is not standard or is incompatible with the LTE Mobile WiFi
Smart. Otherwise, the card as well as your LTE Mobile WiFi Smart may get damaged and
the data stored on the card may be corrupted.
Using the Power Adapter
Connect the LTE Mobile WiFi Smart to the power adapter's USB port, and connect the power
adapter to a power outlet.