Quickly identify the USB interface in the win7 system is 3.0 or 2.0

Nowadays, the USB3.0 data interface has become more and more popular, and there will be a large number of usb3.0 data interface products on the market, but the usb2.0 data interface still exists in large quantities, for the transmission speed of USB3.0. It's faster, but how do we tell if the usb interface is 3.0 or 2.0 when we use it? The following small series takes the computer company win7 system as an example, to bring you the skills to distinguish the usb interface is 3.0 or 2.0.

1, the number of pins for hardware judgment

Although the shape of the usb is an interface, the main body of the internal work is the line, there are four pieces of copper foil on the inside of the usb2.0 interface. In fact, this is the basic communication line of usb2.0, which is red, black, green and white in the cable, and five copper foils inside the usb3.0 interface, and four copper foils underneath. This shows that the above is actually present usb3.0 nine lines, USB 2.0 is a pin 4, and pin 9 using the USB 3.0, than multi-pin USB2.0, as shown below:

2, through the device manager to determine the usb interface

First right click on the computer icon, then select “ attribute → device manager & rdquo;, click on the device manager "Universal Serial Bus controller ” View the status of the usb interface.

above to share with you is about to teach you how to quickly identify computer systems company win7 usb interface is 3.0 or 2.0 of the contents of all, with the popularity of usb3.0, usb3.0 the future Gradually replace usb2.0, interested friends can understand and see.