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this post was submitted on 27 Jun 2024
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The cheap Chinese stuff often uses knock-off ICs tho.
They can be fairly difficult to detect, and will work for a short time or under very light loads. But they will be nowhere near the spec of the data sheets.
They might massively overheat, not provide the correct currents or voltages, run at lower speeds. All sorts of corners being cut to turn a $2 IC into a 50¢ IC. Or a 50¢ ic into a 5¢ one
So yeh, might be the same PCB layout inside, it might visually look the same (or very very close) but the parts are likely to be counterfeit.
Of course, it's also probable that name brands might be hit with counterfeit parts inside as well. Hopefully their QA picks that up
I've found this when trying to get a decent USB>9-pin Serial connector.
You think it's your software, or something weird going wrong. Then you swap over a name-brand adapter, and the thing just works.