Pololu - 8. The A-Star 32U4 USB interface
Elite-C V4 - USB-C Pro Micro Replacement ATmega32u4 – Keebio
Pro Micro ATmega32U4 5V/16MHz Mini MCU Leonardo Micro USB - BEEMONG TECHNOLOGY
SparkFun Qwiic Pro Micro - USB-C (ATmega32U4) - DEV-15795 - SparkFun Electronics
microcontroller - How can I program an Atmega32u4 over USB with this schematic? - Electrical Engineering Stack Exchange
Qwiic Pro Micro USB-C (ATmega32U4) - SparkFun | Mouser
USB ATMEGA32U4 Mini Development Board For Arduino Leonardo | eBay
schematics - Connecting USB-C port with ATmega32u4 - Questions - Electrical Engineering Stack Exchange
Badusb Mini Development Board Beetle USB ATMEGA32U4 Virtual Keyboard Module - AliExpress
Amazon.com: BIT-C Pro Micro MCU with USB-C & DFU bootloader (ATmega32U4, 5V/16MHz) (Black) : Electronics
Mini USB ATmega32U4 Pro Micro 5V 16MHz Board Module For Arduino/Leonardo ATMega 32U4 Controller Pro-Micro Replace Pro Mini - AliExpress
HiLetgo 2pcs Leonardo R3 Pro Micro ATmega32U4 Development Board With USB Cable-Shenzhen HiLetgo Tech
ATmega32U4 Pro Micro Controller Board for Arduino Pro Micro 5V TYPE-C – eElectronicParts
ATmega32u4 Minimal USB-C Resources - EasyEDA
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
AVR ATmega32U4 USB Development Board – Waiting for Friday
Monday Experiment: Bootloading an ATmega32u4 with Arduino | Murchlabs
Arduino-compatible ATmega32U4 USB Type-C dev board - Electronics-Lab.com
ATmega32u4 usb powered minimal bootloader and test circuit - Microcontrollers - Arduino Forum
USB C - ATMEGA32U4 : r/AskElectronics
