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by cesarb 946 days ago
> before a kind sales rep advised they did not exist.

Plot twist: they do exist, but not like you would expect. Unlike the forbidden USB A to USB A cable (which connects together the power supplies on both ends), there's a special debug-only USB A to USB A cable, which connects only the USB 3 pairs (and leaves both power and the USB 2 pair disconnected). Of course, that cable is useless unless you know how to put one of the devices in the special debug mode (and know which of the USB ports is the correct one, since AFAIK this debug mode usually works on only of the USB ports).