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→Prepare the required accessories
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<li><p>'''3.3V''' USB to TTL module and DuPont line, when using serial port debugging function, need USB to TTL module and DuPont line to connect the development board and computer</p>
<p>[[File:cm4-img19.png|350px]] [[File:cm4-img20.png|450px]]</p></li>
<li><p>Personal computer with Ubuntu and Windows operating systems installed</p>