No, never used a USB hub since most new cases come with front panel USB connectors now.
I cant remember if it could or could not, I just built this computer from spare parts I had lying around from past gaming computers. It had auto configured the HDD and DVD rom correctly so I didnt have to enter the bios, but now that my mother wants to use the front audio jacks and they dont work I need to make sure that the internal front HD/audio 97 connector is turned on. The rear jacks work fine for the speakers but the speakers dont have a headphones connector 🙁