Comment 12 for bug 1928710

I got all 16 USB ports on the hub recognized by plugging it into the usbC port. A few things needed to happen in advance for that to work. 1. Supply power through PoE (or GPIO on the Pi4). 2. Switch the USB C port to host mode, and using the dwc2 driver. 3. Reboot Pi4. It's down to USB2.0 speed though but it doesn't have the same limit as xHCI. This plus the USB2 port on the Pi4 which could support up to 13 devices on the same USB hub, I could connect a max of 29 devices. The USB2 port still uses xHCI and thus the 13 device limit.