PowerLine Micro USB - syncing data via a charging cable

I was given a USB cable to verify as suitable for reading data from a glucose meter (Verio Flex, from OneTouch). Plugged it into a PC, connected the meter, and ran the software successfully. So as far as I was concerned it was fine.

But users started complaining it wouldn’t work for them. Checking the box I saw it’s a A8132, which is listed as charging only, no syncing - yet if I try one I can sync without a problem.

Anyone have any ideas about what’s happening or things I could check?