The difference：
Theoretically speaking, the transfer rate of USB2.0 is 480Mbps, which is 60MB/s, and the transfer rate of USB3.0 is 5.0Gbps, which is 625MB/S. Therefore, the transmission speed of USB3.0 is 10 times that of USB2.0. above.
Resolution method：
The middle of the USB3.0 interface is blue
The middle of the USB2.0 interface is white or black
