Now with the popularity of mobile phones, electronic devices, etc., the use of USB cable is also getting more and more, theUSB Charger cable  on the market are dazzling, how to distinguish the data cord of usb2.0 and usb3.0.  Sinodec Industrial Co., Ltd.  is a professional manufacturer, sales and one-stop wholesale USB cable. We offer different USB charging and data sync cable  that can be customized according to customer needs.

So how can we distinguish between USB2.0 and USB data lines?

Speed difference

There are three USB interfaces: USB1.1, USB2.0 and USB3.0:

In theory, the transmission speed of USB1.1 can reach 12Mbps, and all devices can only share the bandwidth of 1.5MB/s.  If a single device occupies all the bandwidth of the USB interface, it will cause difficulties for the use of other devices.

USB 2.0 can achieve speeds of up to 480 Mbps and is backward compatible with USB 1.1.

USB 3.0, initiated by Intel and other companies, has been updated by USB IF to USB 3.1 gen 1, is a new generation of USB interface, characterized by very fast transfer rate, theoretically 5Gbps, more common than the popular 480Mbps USB2.0  The serial bus is 10 times faster.

Sort: USB 3.0>USB2.0>USB1.1

And USB transmission is not affected by the network, only related to itself, such as the 3.0 U disk, but plugged in the 2.0 interface, at this time, the speed of the U disk will be backward compatible, down to 2.0 speed.  That is to say, the transmission speed of the 2.0U disk inserted on the interface of 3.0 is still 2.0, and the USB disk of 3.0 is inserted into the 2.0 computer to become the transmission speed of 2.0.

Pin definition

Difference in shape structure

USB 2.0 uses a 4-pin design, while USB 3.0 uses a 9-pin design, which is more powerful than USB 3.0.

The USB 3.0 interface section is marked with the "SS" style, while the USB 2.0 only marks the normal USB universal logo.

USB2.0

Our laptop USB interface generally has two or more, has been mentioned at the same time, for USB2.0 and USB3.0 support, we can distinguish by interface color.  Similarly, for the USB2.0 and USB3.0 data lines, we also made a difference in the color of the USB interface. Of course, for the USB3.0 Type B printer cable and the USB3.0 Micro B cable, we can get the shape and size of the connector.  You can see the difference.