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Amazon.com: HiLetgo 3pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible to Arduino Pro Micro Serial Connection with Pin Header : Electronics
![schematics - Connecting USB-C port with ATmega32u4 - Questions - Electrical Engineering Stack Exchange schematics - Connecting USB-C port with ATmega32u4 - Questions - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/esWNb.png)
schematics - Connecting USB-C port with ATmega32u4 - Questions - Electrical Engineering Stack Exchange
![microcontroller - How can I program an Atmega32u4 over USB with this schematic? - Electrical Engineering Stack Exchange microcontroller - How can I program an Atmega32u4 over USB with this schematic? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/pgPRz.png)