when you data cable connect to computer
Oct 24, 2018| The Third: Host front USB interface is not available
If it is a desktop computer, it has a front USB interface. The front USB interface is connected to the computer motherboard through a cable. When the USB connector is loose or the front USB is not plugged in, it cannot be used. However, this situation happens rarely. The front USB of the computer host does not respond, which is usually caused by insufficient power supply, so you can connect the mobile phone data cable to the USB and try it.
The Fourth: The USB interface behind the chassis is blocked.
If it is not plugged in the rear USB, there is a big possibility that the BIOS setting shields the USB interface, and it can be set to the BIOS. This is not the case with a computer that is generally used by itself. Only the Internet cafe will block the USB interface. If it is in the Internet cafe, you can contact the network administrator.