![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 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](https://m.media-amazon.com/images/I/71e9+R+zjkL._AC_SL1010_.jpg)
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
![Buy SparkFun Qwiic Pro Micro - USB-C (ATmega32U4) - Compatible with Arduino development board 5V/16MHz microcontroller AP2112 3.3V Voltage Regulator Castellated PTH pin pads Reset button Maximum 6V input Online at Lowest Buy SparkFun Qwiic Pro Micro - USB-C (ATmega32U4) - Compatible with Arduino development board 5V/16MHz microcontroller AP2112 3.3V Voltage Regulator Castellated PTH pin pads Reset button Maximum 6V input Online at Lowest](https://m.media-amazon.com/images/W/WEBP_402378-T2/images/I/61vBbErz0TL._AC_SL1000_.jpg)
Buy SparkFun Qwiic Pro Micro - USB-C (ATmega32U4) - Compatible with Arduino development board 5V/16MHz microcontroller AP2112 3.3V Voltage Regulator Castellated PTH pin pads Reset button Maximum 6V input Online at Lowest
![Amazon.com: BIT-C Pro Micro MCU w/USB-C & DFU bootloader (ATmega32U4, 5V/16MHz) (White) : Electronics Amazon.com: BIT-C Pro Micro MCU w/USB-C & DFU bootloader (ATmega32U4, 5V/16MHz) (White) : Electronics](https://m.media-amazon.com/images/I/51fYa2mFArL._AC_SY450_.jpg)
Amazon.com: BIT-C Pro Micro MCU w/USB-C & DFU bootloader (ATmega32U4, 5V/16MHz) (White) : Electronics
![Mini/Type C/Micro USB Pro Micro ATMEGA32U4 5V/16MHZ module With the bootloader for arduino with 2 row pin header for arduino|Integrated Circuits| - AliExpress Mini/Type C/Micro USB Pro Micro ATMEGA32U4 5V/16MHZ module With the bootloader for arduino with 2 row pin header for arduino|Integrated Circuits| - AliExpress](https://ae01.alicdn.com/kf/Saa32ed0f7ccf423e913a84dd89186ba07/Mini-Type-C-Micro-USB-Pro-Micro-ATMEGA32U4-5V-16MHZ-module-With-the-bootloader-for-arduino.jpg_Q90.jpg_.webp)