Updating the Atmega8U2 on an Uno without soldering - Microcontrollers - Arduino Forum
Usb Cable For Arduino Compatible With Uno R3 Atmega328p-pu/atmega8u2 And Mega 2560 R3 Mega2560 Rev3 Atmega2560-16au Board - Integrated Circuits - AliExpress
Arduino Uno
Standalone Atmega8u2 gotchas? - Microcontrollers - Arduino Forum
Discontinued] SainSmart UNO ATMEGA328P-PU ATMEGA8U2 Microcontroller F – SainSmart.com
usb cable for arduino with UNO R3 ATMEGA328P PU/ATMEGA8U2 and Mega 2560 R3 Mega2560 REV3 ATmega2560 16AU Board|cable usb|cable usb usbmega2560 r3 - AliExpress
Updating the Atmega8U2 on an Uno or Mega2560 using DFU - Arduino Project Hub
Recompile (Rename) and Flash HIDUINO With ISP to Turn Your Arduino Into an HID (usb-midi) Device : 9 Steps - Instructables