Huawei E5577-320 - Device Appearance and Controls; Component Identification and Reset

Appearance
Signal indicator Power button
Battery indicator Reset button
SIM card slot
To power off the Mobile WiFi: Press and hold the Power
button until all indicators turn off.
To restore the Mobile WiFi to its factory settings: Use a
pin to press and hold the Reset button while your Mobile WiFi
is powered on. When all indicators start to flash, the reset is
complete.
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