Thanks for your thoughts. I don't need a hub. I have looked in the BIOs: All ports are enabled.
But I'm thinking of my last discussion at No Bluetooth connection to the speaker - #8 by tl85 back. Then I had installed usbguard, among other things, although I didn't know exactly what it was for. I suspect that the problem is. What code can I use to uninstall or deactivate usbguard?