Discontinued] SainSmart UNO ATMEGA328P-PU ATMEGA8U2 Microcontroller F – SainSmart.com
Arduino Uno
UART-Serial-USB : USB Serial Light Adapter Atmega8U2 Arduino ...
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
Electro-Magnetic World: Arduino Uno
Arduino Uno
Updating the Atmega8U2 on an Uno without soldering - Microcontrollers - Arduino Forum