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by the_biot 144 days ago
I think that's what happened here. I spotted the fake because it has a large number of unused pins, which would not be the case with an FTDI chip that was literally made for this.

I think it's just some generic microcontroller emulating FTDI's protocol in software, but it can't keep up with high-speed transfers of course, and that's how they noticed there was a problem.