There is an instruction to install the patched OS using a usb 2.0 hub, because Sonoma doesn't support the usb 1.1 protocol that is part of the Mac Pro 5,1 build. This is fixed with a post install root patcher, so all the usb ports work again. But does this hub need to be powered, or not? Seems to me to be a crucial piece of information to have before starting the search for a usb 2.0 hub. Does anyone know for sure?