When Meizu M9 is plugged into USB, the following situation occurs. Is it a problem with the computer or the phone?

Try to connect to another computer. If the problem persists, it is a problem with the mobile phone

If it is a problem with the computer, the driver is not installed properly when it is automatically installed when connecting to the mobile phone

If there is a problem with the mobile phone, it is a problem with the interface or data cable

This is usually a problem with the computer. You may need to change the USB interface on the computer (there are multiple USB interfaces on the computer) and then You can succeed even once