Can buy a \"PCI\" interface USB expansion card (preferably NEC chip, generally VIA).
Many people's computers are the host front USB interface can not be used, the host front USB interface is connected to the corresponding port on the motherboard through the data cable, if the connection is loose, or the middle of the data cable has a problem, then the host front USB interface can not be used.
The USB service is disabled. This would not have happened if the service had not been set.
1. Download a \"USB Universal driver\" to try it out.
2. No, it's probably a burnt USB port. This way, the motherboard will not show any problems.
3. You can buy a USB expansion card with \"PCI\" interface (preferably NEC chip, generally VIA).