Discount (or even grey market) electronics can be economical ways to get a job done, but one usually pays in other ways. [Majenko] ran into this when a need to capture some HDMI video output ended up ...
When new USB standards come around, they always talk about backwards compatibility. E.g., the new 4.0 spec says "…Backward compatibility with USB 3.2, USB 2.0…". Having no USB 1.0 or 1.1 devices handy ...