I'm not sure what you mean. I have a 17" and it doesn't work, and that link you show is the cable in mine (which doesn't work), for $39 +shipping.
I would not go that route as the answer most likely is a firmware update.(it always is).
Anyway, if it is the cable then none of them are up to spec and the ones that do work are a fluke (variations in manufacturing).
But I don't know, i'm just guessing. Perhaps you are much more knowledgable about this (I hope so as i'm clueless) 😀
BTW, there's another MBP (13") coming to the house in a couple days so i'll test it in that. If that works, then the whole thing is screwy.
I'm not an expert either, just so desperate and trying to resolve this issue since I know based on my experience with apple they never fix anything unless its being reported by most media sites and most users are being affected by it.
I hope its a firmware update, I really do. But the reports that its working with some people make me wonder if its really just a firmware issue, I know that software and firmware would be 100% the same with all machines, but hardware would never be the same.
well, lets just wait and see how it goes🙄