I got my Arduino UNO R3 earlier and I tried to use it after I downloaded Arduino on my mac.. The problem is I can't find it in the port and I tried multiple times unplugging the usb on both sides. My mac is a MacBook Pro Retina from 2015 and it's macOS Sierra Version 10.12.6 could the issue be that i'm using an old mac? I'm also using the Arduino AVR Boards version 1.8.3 should I be using an older version? Please help!
Thank you for sharing your issue with the Arduino community.
Please read this thread https://forum.arduino.cc/index.php?topic=427825.0
And also try the following:
- Try a new USB cable making sure it is a DATA USB one.
- Connect the board to a different computer and check if it has the same behavior.
If the problem persists contact Arduino Technical Support