Teach you how to quickly identify the usb interface of the computer company win7 system is 3.0 or 2.0

1. The number of pins for hardware judgment
usb Although the shape is an interface, the main body of the internal working is the circuit. There are four pieces of copper foil on the inside of the usb2.0 interface. Actually, this is usb2.0. The basic communication line is red, black, green and white in the cable, and five copper foils on the inside of the usb3.0 interface, and four copper foils on the bottom. In this way, there are nine lines in usb3.0, USB 2.0 is 4 pins, and USB 3.0 uses 9 pins, and the stitches are more than USB2.0, as shown below:

2 Device Manager to determine the usb interface
First right click on the computer icon, then select “Properties →Device Manager", click on the "Universal Serial Bus Controller" in the Device Manager to view the usb interface status.