If I could offer one correction, it would be that SBU (as specified by the USB 3.0 Promoter Group[1]) means "Sideband Use" rather than "Secondary Bus".
On some devices, it is used to carry UART; on others, audio.
Not the OP you responded too, but what the hell! I have not really used windows in a while but that's absurd. That text is massive just for an unsigned driver.
wow, didn't know about this, i developed some drivers and had this test mode enabled to debug some aspects of it, but now it is almost unusable with this on screen.
I’ve noticed most of the replies to your comment address the first half, and none (as of right now) address the second:
> So the question that comes to my mind is whether this is yet further new and different Raspberry Pi 5 hardware that comes with no software or prospect of software.
If by “this” you mean the MicroSD Express hat from the article: this is a hobby project produced by a hobbyist, who seems to have no plans to sell or mass produce it.
It is unfair to the creator for you to lump it in with, and draw a conclusion from, the works produced by Raspberry Pi Holdings.
If I could offer one correction, it would be that SBU (as specified by the USB 3.0 Promoter Group[1]) means "Sideband Use" rather than "Secondary Bus".
On some devices, it is used to carry UART; on others, audio.
[1]: https://www.usb.org/sites/default/files/USB%20Type-C%20Spec%... (pdf)
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