Huawei MMC255u Quick Start Manual page 6

If the support rotates anticlockwise by 180 degrees, the
MMC255u can stand vertically on the table, as shown in
the following figure.
When the MMC255u stands vertically, you can fix the
power cable to the power cable clip, as shown in the
following figure.
Switching On the MMC255u
Switching On the MMC255u
Press and hold the power button at the rear panel of the
MMC255u for at least two seconds. The MMC255u is
powered on.
Note
If you press and hold the power button again for at
least two seconds, the MMC255u is powered off.
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