For those who have come into contact with electronic products, the most familiar interface should be USB.
In the era of USB 3.0, the naming of USB interfaces began to create unprecedented confusion: at first it was the evolution of USB 3.0, from USB 3.1 to USB 3.2 and was later collectively changed to USB 3.2 Gen X.
In the USB 4 era, the decimal point naming unexpectedly disappeared. Not long ago USB 4 v2.0 was born and it was confusing again.
Perhaps due to the painful decision, USB-IF made two important decisions, one is to officially eliminate the brand name method of USB 3.x / USB 4 and the other is to cancel the SuperSpeed USB trademark.
Now, USB 3.x and USB 4 will be changed to “USB + Transfer Speed” nomenclature, ie USB 5 Gbps, USB 10 Gbps, USB 20 Gbps and USB 40 Gbps. Since USB 4 v2.0 is still in the draft stage, it hasn’t been officially named, and if nothing else, it will eventually be called USB 80Gbps.
So the question is, what about USB 2.0? USB-IF explained that since the transfer speed of USB 2.0 is only 480Mbps, if it is also changed to USB 480Mbps at the same time, the large number behind it may mislead some users, so USB 2.0 and USB 1.0 continue to be maintained. .
According to the idea of USB-IF, it is easy to get confused when using intergenerational naming. It is better to indicate the speed directly. The new naming rules will be applicable to various printing applications such as interface, cable, packaging, etc. If it is a fast charging device, it must also be marked Maximum power.
It seems to be more intuitive, but don’t be happy, there are more confusing things behind it. Since USB is an open standard, not mandatory, if manufacturers are willing to continue using USB 3.x, 3.2 Gen X, USB 4, or even USB 4 v2.0, there are still no restrictions.
The current plan calls for the new naming scheme to come into effect one after the other starting this season.
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