Pretty much this, thanks for the summary

I have one of those, it may pass as the great grandfather ;)

They actually renamed the types which makes everything even more confusing

Yeah, unfortunately fast data and fast charging are two independent characteristics…

The thing is from Austria though?

Pretty much. I’m not even sure if regular USB ports can talk to pins individually, let alone test them for shorts.

Interesting, I just uploaded the .mp4 directly to lemmy and assumed this to be working. How else would you share a gif/short video?

Not sure what else, but the thing can tell you if a cable is USB2.0, USB3.0/3.1/… or just for charging.

I could design and produce a small batch of those adaptors.

Would anyone be interested in getting a prototype and helping to test it?