Quick Tip: High-Pitched Noise on Mac Mini M4 Pro? Check Your USB Hub
I recently ran into something that almost drove me insane. My Mac Mini M4 Pro started emitting a high-pitched noise – noticeable when idling and under load. Not loud, but one of those frequencies you can’t “unhear” once you notice it. At first, I suspected coil whine from the device itself. But the real culprit…

