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A comment on How many kinds of USB-C to USB-C cables are there?. Parent comment

Re:How many kinds of USB-C to USB-C cables are there? by kllrnohj on Monday July 15, 2019 @06:36PM (#20445940)
Note that Thunderbolt 3 is not part of the USB 3.2 standard. It's the basis for USB 4, but right now to be fully standards compliant with everything USB-C itself can fully do you do not need to be Thunderbolt 3 compatible, because thunderbolt 3 is not part of the spec at all.

And even if you wanted to be Maximum Compatibility even with Thunderbolt 3 you may not have that option as TB3 tops out at a cable length of 2 meters, and at that length you're dealing with half-rate bandwidth (just 20Gbps instead of the full 40Gpbs - which you only get up to 0.5m)

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Re:How many kinds of USB-C to USB-C cables are there? by throw0101a on Wednesday July 17, 2019 @03:21PM (#20463057)
> Note that Thunderbolt 3 is not part of the USB 3.2 standard.

It may be better to say that Thunderbolt 3 is a 'superset' of USB: TB is its own protocol, which allows for the carrying of USB over it (as well as PCIe and DisplayPort).

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