The Uno board and version 1.0 of Arduino Software (IDE) were the reference versions of Arduino, now evolved to newer releases. The Uno board is the first in a series of USB Arduino boards, and the reference model for the Arduino platform; for an extensive list of current, past or outdated boards see the Arduino index of boards.
Keyestudio Max Board Main Control IC Atmega328p CP2102 USB To Serial Port Module For Arduino STEAM DIY Electronic Kit - AliExpress
Arduino Uno Rev3 R3 Kit Module Board + Sensor Shield board + USB Cable
Arduino Uno R3 Compatible Development Board with USB Cable - 10 Pack
Interface+usb Cable, Arduino Keyestudio, Development Board, B Products
Arduino Uno Rev3 — Arduino Online Shop
Arduino Uno REV3 SMD - RobotShop
The Arduino Sensor Kit is made for Makers who have just started using Arduino to explore the vast space of electronics and programming. This kit
Arduino Sensor Kit - Bundle
Arduino Motor Shield Rev3 — Arduino Official Store