Automatic Mcu Usb 51 Microcontroller Downloader Auto Programmer / 3.3v 5v Universal / Dual Voltage Usb To Ttl Download Cable - Integrated Circuits - AliExpress
Amazon.com: BIT-C Pro Micro MCU with USB-C & DFU bootloader (ATmega32U4, 5V/16MHz) (Black) : Electronics
Tomu: A Microcontroller For Your USB Port | Hackaday
Compact 8-bit MCU boards controlled/powered through USB connection
usb device - USB Full Speed driver with MCU in DIP package - Electrical Engineering Stack Exchange
ATmega32U4 8-bit MCU with USB Controller - Microchip Technology | Mouser
USB MCUs and dsPIC DSCs | Microchip Technology
USB to TTL isolated type STC Series MCU Auto Programmer Downloader STM8 STM32 | eBay
Nano V3.0 ATmega328P AU MCU, Arduino kompatibel, USB CH340G, 7,90 €