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Add USB note

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Scott Shawcroft 2021-12-03 11:29:53 -08:00 committed by GitHub
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_board/ai_thinker_esp_12k_nodemcu.md
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@ -27,6 +27,9 @@ Specifications:
- Built-in Wi-Fi
- USB to serial converter: CH340C
The micro USB connector on this board is wired through a CH430C USB to serial converter chip for debugging and programming. The native USB is not available on a USB connector - instead you'll want to pick up a [Micro B USB](https://www.adafruit.com/product/1833) connector breakout, [Type C USB](https://www.adafruit.com/product/4090) connector breakout or [USB data cable](https://www.adafruit.com/product/4448) and hand-wire IO19/IO20 to D- and D+ pads.
## Purchase
* [Tinytronics](https://www.tinytronics.nl/shop/en/development-boards/microcontroller-boards/with-wi-fi/ai-thinker-nodemcu-32-s2-esp-12k)