You know that in official roms (either Android 8.0 or 9.0) the led is blue when the box is ON and the led is red when it is in sleep or shut down state. So in coreelec is reversed, that’s why I refer to it as a minor “problem” (meaning something different than the official or what you were used in).
As far as the power to USB ports, as I already know it is not the same to all H96 max X2 boxes. It differs from box to box (due to different boards, ram being DDR3 or DDR4 etc). I think that once I tried to turn the power off to USBs through the settings in coreelec but if I remember well without success (they still had power).