The old 'USB Prober.app' does not work after Mavericks. Is there way to capture USB data in Sierra?
To be specific, I got a LG UltraFine 4K monitor, whose brightness can only be controlled from macOS via USB protocol
I would like to figure out the traffic data and write a utility for controlling brightness in other OSes.
The connection is a special DP over USB-C so I cannot use a hardward USB tracer.