It is understood that from the USB3.0 interface, in addition to having 4 metal contacts of the USB2.0 interface, it adds 5 smaller new contacts inside. At the same time, in addition to the use of copper as a transmission medium, the USB3.0 interface and the USB3.0 type c cable can also support the optical fiber transmission function, the transmission speed of fiber output is obvious to all.

It is understood that after using optical fiber connections, the speed of USB3.0 can reach 20 times or even 30 times that of USB2.0. Undoubtedly, the ultimate goal of the USB3.0 standard is not only to be limited to the data transmission rate of 4.8Gbps but to further break through the limit speed in the future. With the full application of fiber wire, USB3.0 will get higher transmission speed, and the future expansion of the mainstream products will be further demonstrated. For example, the transmission of USB high-speed network or radio and TV program signals on PC. USB 3 uses a new physical layer, which uses two channels to separate data transmission and confirmation process, thus achieving 4.8Gbps data transmission speed.

In order to replace the rotation detection and broadcasting mechanism used by USB2.0, USB3.0 will adopt a packet routing technology and only allow the terminal device to transmit data when it is sent. The new link standard will also allow each component to support a variety of data streams, and each data stream can maintain an independent priority. This function can be used to terminate the interference caused by the jitter during video transmission, and the transmission mechanism of the data stream also makes the inherent instruction queue possible, so that the data transmission of the USB3.0 interface is transmitted. Transmission is more optimized. Finally, the USB3.0 type c cable manufacturer concludes: the new generation of USB3.0's interface is ten times faster than the current USB2.0.

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