Arduino Leonardo not detected on Mac Pro M3

[raddevus]

I'm having a very similar problem with Arduino IDE & my Mac pro m3 laptop running macOS Sequoia 15.2.
Running Arduino IDE 2.3.4

I have a Leonardo that works perfectly on my Linux desktop computer. I'm using the same Leonardo & USB C cable on my mac laptop that I'm successfully using on my Linux desktop but the Leonardo (which is running a blink program) doesn't even get powered on by the mac laptop (no blinkenlights!)

I see 3 similar USB ports in my Arduino IDE on the mac.
It's too bad this just doesn't seem to work.

The additionally odd thing is that I can successfully connect a ESP32-C device to the same USB C cable on the mac laptop and I do indeed see a USB port appear in the Arduino IDE.
USB shows up as /dev/cu.usbserial-0001 and works properly with the ESP32 device.

Im guessing that the laptop reads some value from the device & decides either:
1 - ok I'll connect
2 - nope, not gonna do it.

[sterretje]

I've moved your question to a dedicated topic because you're using a different board.

[sonofcy]

I have an Air M3 and it works fine. Did you download the Silicone version of the IDE? Have you installed the Leonardo board in the board manager?
If so, open the blink sketch with the IDE, plug the Mac into the Leonaro and it should work.

[J-M-L]

Did you install any additional drivers or inherited them from migrating a previous installation? If so remove them as you don’t need that).

If you have an USB 2 hub laying around, try connecting the hub to the Mac and then the Leonardo to the Hub.