Review on 5Pcs Longruner Arduino Mini Nano V3.0 ATmega328P Micro Controller Board Module With USB Cable For ArduinoIDE by Antonio Parson

Works like an Uno in December 2021 on my configuration: Macbook Air, Big Sur OS 11.6.1, Arduino IDE 1.8.15. No special tricks needed.* Connect with a Mini USB cable. The Mac recognized the CH340 USB interface. No need to download a driver.* Set the IDE to target an Uno. Click the Upload arrow to compile and upload code.* There was NO NEED to select "Old Bootloader", even though some older reviews talk about doing that. A modern Uno bootloader appears to have come installed on the device I received.I gave five stars for ease of use because I feel comfortable soldering header pins into place. After installing the pins, it plugs directly into a breadboard, making all of the pins available without a nest of jumper wires.Just for fun, I uploaded code via the ISCP header also. Later, I burned an up-to-date bootloader onto the device the same way.The individual units are very neatly packaged, each one sealed along with its headers inside a protective sleeve. I hope the other nine units that came in the box work as well as the one I assembled first.