It is set up to be plugged into something else via USB, not have USB devices plugged into it.
Kind of like plugging a USB camera into a keyboard with USB ports, or a USB mouse into a USB printer port. Can’t do anything.
BTW, I have not looked at the specs to see if it can serve as a host. However, if there is going to be a USB dongle (as another poster stated) then the ability must be there to allow it to host USB devices.