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→Debug serial port connection instructions
4)The schematic diagram of connecting the USB to TTL module to the computer and the Orange Pi development board is shown below
<div style="padding-left:200px">[[文件:Orange-pi-3lts-ttlmodule2.png|600px]]</div>
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5)If you are using a CP2102 USB to TTL module, under the condition of a baud rate of 1.500000, some systems may encounter garbled or unusable problems. The specific test situation is as follows
{| class="wikitable"
|-
| USB to TTL module model|| Host system|| Support situation
|-
| rowspan=5|CH340|| win7 || ok
|-
| win10|| ok
|-
| ubuntu14.04|| ok
|-
| ubuntu18.04|| ok
|-
| ubuntu20.04|| ok
|-
| rowspan=5|CP2102|| win7 || ok
|-
| win10|| Not available
|-
| ubuntu14.04|| ok
|-
| ubuntu18.04|| Not available
|-
| ubuntu20.04|| Not available
|}
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==== '''How to use the debugging serial port on Ubuntu platform''' ====