I haven't seen benchmarks, but my understanding is to officially claim USB4 support with Windows, 40Gbps and PCIe tunneling support are both required. This PC W

I haven't seen benchmarks, but my understanding is to officially claim USB4 support with Windows, 40Gbps and PCIe tunneling support are both required. This PC World article has some real world testing w/ a Ryzen 6000 laptop: https://www.pcworld.com/article/703578/usb4-support-amd-ryzen-6000-laptop.html https://www.pcworld.com/article/703578/usb4-support-amd-ryze... I'm sure you can get a BSP contract w/ AMD to get implementation details (or simply have a relationship with a board design partner, but I'm not really sure why there would be an expectation for public information on something that's not really relevant to the general public).