@Miaourt @dashie

> USB4 cover most of the Thunderbolt 3 spec, and should be sufficient to declare full Thunderbolt 3 compatibility.

Not *full*. USB4 implementations can optionally support most of Thunderbolt 3 including the PCIE mode that's no longer Thunderbolt-specific. The mention of Thunderbolt on this ad is probably targeting the Thunderbolt network adapter dongles but the lack of clarity here is strange.

USB4 can also exist without the PCIE mode support (it requires CPU+motherboard support as it needs extra PCIE lanes) but allegedly Microsoft won't certify the hardware if the USB4 implementation is missing it.