It should be illegal to manufacture a power only USB cable without it being obvious by looking at the cable.

Take a guess at which of these three cables provides communication as well as power?

The answer?
NONE of them! Not one.

Don’t worry, I only wasted an hour or two trying different ports, trying to install dodgy USB drivers, looking up schematics and probing voltages trying to figure out what was wrong.

@gcaw Oh don't I know the feeling. Nowadays I clearly mark my data cables with permanent marker, and kids aren't allowed to touch them

@gvrooyen apparently I got unlucky, rounded up 8 not in use cables, 4 of them are power only, and I pullled three of them in a row.

Anyway, now they’re all marked, good and bad