Buy UNO R3 Development Board Compatible with Arduino - With USB Cable - (USB Chip CH340) with cheap price
Using Arduino IDE with unofficial Arduino clones bearing CH340 chip | by Andrey Semenyuk | Dev Genius
Mini USB con el controlador bootloader Nano 3,0, compatible con arduino CH340, controlador USB 16Mhz NANO V3.0 Atmega328|Circuitos integrados| - AliExpress