The naming method of the USB interface has always been difficult to understand. Everyone knows what happened to the previous 1.0 and 2.0. When USB 3.0 came out, it was still simple and clear. But naming after USB 3.0 starts to get complicated. The official USB organization has adopted the USB 3.0 GenX method since USB 3.0, with a maximum transfer rate of 20Gbps, but it often makes users feel dizzy and do not know how to distinguish USB interfaces with different transfer rates.
After USB 3.2, it is reasonable to say that it should be USB 4.0, but the official organization has made a new move before, naming the latest USB interface as USB 4.0 V2, with a speed of 80Gbps. Seeing that the naming of the USB interface is getting more and more confusing, it may be that the official organization can’t stand it anymore, so they changed the name of the USB interface again, but this time it is finally clearer, so that people can know their own USB interface at a glance What is the performance.
Specifically, the USB-IF organization has made two key changes in naming, one is to officially delete the commercial naming method of USB 3.x/USB4, and the other is to cancel the Super Speed USB brand. From now on, the naming method of the USB interface will be directly named in the way of USB + transmission rate, that is, in the future, everyone will know the transmission rate of the USB interface directly from the naming of the USB interface, and there is no need to tangle.
In this way, the existing USB interfaces will be named USB 5Gbps, USB 10Gbps, USB 20Gbps and USB 40Gbps, while the USB 4.0 V2 that was being drafted before has not yet been named, but it is estimated that it should be USB 80Gbps. Of course, the new interface will be Type-C, which has not changed. The new naming rules will apply to various printing scenarios such as interfaces, cables, packaging, etc. If it is a fast charging device, the maximum power must also be marked.
This change is undoubtedly more user-friendly. The naming method in the past is prone to confusion, and it makes users unable to intuitively understand their products. It is better to directly mark the speed. However, the old USB1.0 and USB2.0 will not change, because the performance of these two old USB interfaces is indeed relatively weak. The transmission speed of USB 2.0 is only 480Mbps, so there is no need to change it, and it seems that using USB 480Mbps is a bit longer.
However, the problem has not been completely solved. Although the USB IF organization makes the naming of USB interfaces simpler and clearer, at the same time, they will not restrict manufacturers. Because USB is an open standard, manufacturers are not forced to use any names, so manufacturers are willing to Any name is fine. That is, manufacturers continue to use USB 3.x/3.2 GenX/USB 4 or even USB4 v2.0 in the future, which is also the freedom of manufacturers, but we estimate that more manufacturers will still use the USB+ transfer rate method. It is reported that the new naming method will be adopted from the fourth quarter.