This is the Arduino UNO original manufactured by Arduino Official with ATmega328P microcontroller and 5V operating voltage. It has an input voltage of
Board UNO R3 ATmega328P + USB Cable for Arduino IDE - Devobox
UNO R3 Arduino DIP Atmega328p
Arduino UNO Microcontroller Board ATmega
ARDUINO UNO REV3 R3 ATmega328P DIP Atmel Compatible Board Plug and Play (No need download extra
Arduino Uno R3 with USB Cable - Robotech Shop
Original Arduino Uno R3 Development Board Atmega328p AVR 8-Bit MCU - China Arduino Uno, Arduino
STANDARD Arduino UNO board with DIP ATmega328P
Arduino UNO R3 ATmega16U2 ATmega328 (DIP)
UNO R3 CH340G ATMEGA328P DEVELOPMENT BOARD - iFuture Technology