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→The method of USB OTG mode switching
<li><p>Then select '''Developer options''' in the expanded column</p>
<p>[[File:cm4-img479.png]]</p></li>
<li><p>Finally find the '''USB OTG Mode Switch''' switch, '''<span style="color:#FF0000">turn on the switch to switch to Device mode, turn off the switch to switch to Host mode</span>'''</p></li>
[[File:cm4-img480.png]]