How to use an external CH340 USB to serial port board to download programs?

How to use an external CH340 USB to serial port board to download programs? In the later stages of the project, I do not want to use the micro USB interface to download the program, which is not convenient for debugging when integrated into some shells.
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At least I wonder if there is a way to connect the micro USB through a cable? If possible, please also let me know the wiring schematic of the micro USB part. Thank you. I’m not sure if anyone has tried this tutorial before, as I haven’t seen a beginner friendly tutorial yet.


It seems that I can use the burning port through the lead wire

you can use the 25, 26 pin to connect with ch340 tx, rx for the download.
https://www.amebaiot.com/en/amebapro2-amb82-mini-arduino-getting-started/

thank you,i will try