Step 4: Turn Off Your Orange Pi Correctly; Other Configuration - Orange Pi PC2 User Manual

Orange Pi Manual
The Orange Pi will boot in a few minutes If the above steps are
successful. There will be graphical interface in he monitor. It may take a
long time to start the first time, please wait patiently. The next time will boot
very fast.

4. Step 4: Turn off your Orange Pi Correctly

 You can use the shutdown button on the interface to safety close the
Orange Pi.
 You can also close the system by entering commands in the shell:
sudo halt
or
sudo shutdown –h
It will be safety to turn off the Orange Pi. If directly use the power
button to shut down the system may damage the file system on TF Card.
After the system is closed, the power can be cut off by more than 5 seconds'
press.

5. Other configuration

1) Connect to the wired network
If the Orange Pi has connect to wire cable, then the system would obtain
the IP address automatically. If there is no wire cable connecting, then the
system would fail at obtaining IP address which could cause the booting
delay.
After connecting to wired network, it should be green LED lighting and
yellow LED flashing. You need to make sure the image you wrote is
correspondent since some boards are 100M Ethernet but some are 1000M
Ethernet.
100M Ethernet is using internal phy, configuration just like the
following:
2 indicates internal phy
1000M Ethernet is using external phy
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