The version naming of the USB specification can be said to be confusing, with no explanation for it other than deliberately confusing users.
Now, the USB-IF has reorganized the naming of the USB-C transmission line, which is quite concise and clear.
According to the new regulations, USB-C transmission lines will be classified from two standards of speed level and power level, and manufacturers are required to give clear labels to facilitate consumers to distinguish and choose.
The main contents of the new regulations are as follows:
1. The USB-C to USB-C transmission line will be divided into four rate types in the future, 480Mbps, 5Gbps, 20Gbps, and 40Gbps in sequence. The USB specification version is no longer emphasized, but only the supported rates are distinguished. Meanwhile, USB-IF no longer accepts certification for USB 3.2 Gen2 10Gbps Type-C to USB-C cables.
2. The USB-C to USB-C transmission cable will only support two maximum transmission powers, 60W and 240W respectively. The original 100W power was cancelled and 240W replaced it.
3. Any USB-C to USB-C transmission cable must use the transmission rate and power label specified by USB-IF. The label with the specified Logo can be firmly pasted on the transmission line, or the Logo can be directly printed on the outer mold. The transmission line with the rate of 480Mbps does not indicate the rate, but only indicates the power. For the other three rate types, the rate and power must be indicated at the same time.
4. When the USB-C transmission line is certified, the manufacturer must first apply for a special logo to the USB-IF, and then send the samples with the logo for testing. Before conducting the test, the certified laboratory will also check whether the sample has the correct logo.
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