USB not connected

I can connect my max 3 with Bluetooth but not with the usb port. Any thoughts? I’m trying to download firmware on my MacBook Air.

These two links will help you

In additional to Jim’s answer, I recommend also to take a look at this guide
It works for my MacBook Pro late 2013
If your MacBook Air works with Ventura, I guess it will need additional action for installing the serial driver.
Anyway, I hope you solve it.