GitHub - dmadison/Pro_Micro_USB-A: ATMega32U4 Arduino board from SparkFun, modified to work with a USB-A connector
![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)
microcontroller - How can I program an Atmega32u4 over USB with this schematic? - Electrical Engineering Stack Exchange
![HiLetgo 2pcs Leonardo R3 Pro Micro ATmega32U4 Development Board With USB Cable-Shenzhen HiLetgo Tech HiLetgo 2pcs Leonardo R3 Pro Micro ATmega32U4 Development Board With USB Cable-Shenzhen HiLetgo Tech](http://www.hiletgo.com/comdata/51404/product/20191130105102CDC0AB7310A16755_b.jpg)
HiLetgo 2pcs Leonardo R3 Pro Micro ATmega32U4 Development Board With USB Cable-Shenzhen HiLetgo Tech
![Mini USB ATmega32U4 Pro Micro 5V 16MHz Board Module For Arduino/Leonardo ATMega 32U4 Controller Pro-Micro Replace Pro Mini - AliExpress Mini USB ATmega32U4 Pro Micro 5V 16MHz Board Module For Arduino/Leonardo ATMega 32U4 Controller Pro-Micro Replace Pro Mini - AliExpress](https://ae01.alicdn.com/kf/S99648b118a6b44978e55edee252dedfen.jpg_640x640Q90.jpg_.webp)