So I just got my first Arduino which is an Arduino Uno. I have a newer MacBook Air which doesn't have any USB ports so I thought I'd just use one of those USB-C to USB adapters.

I plugged it in and then searched for the Board in the Tools > Port menu. It was nowhere to be seen, only the /dev/cu.Bluetooth-Incoming-Port showed up.

To be clear, the Arduino did show signs of connectivity, it just didn't show up under the Port list. I'm also not 100% sure if it's an Arduino Uno since the company I bought it from said I should select Arduino/Genuino Uno in the Board menu which isn't an option anymore.

Is it a problem with my Arduino, my Laptop or my adapter?

1 Answer 1


Maybe it is not original, and it uses different usb-serial chip than the original one. Popular converters for Arduino Uno clones are CH340 and CP2104. You may try to install the driver for these 2 chips.

  • 1
    It now shows up in the Ports tab after installing the CH340 driver. Thanks a lot!
    – gurkensaas
    Jul 31, 2021 at 22:30

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