Originally Posted by
unterhausen
I suppose i could make a test connector, but barring that, my only way of testing cables is to plug in a garmin to see if it connects. USB cables often have poor strain relief, and so it's also quite possible to have one that's failed. I feel like I have a lot of mini and micro cables that I have are charging only. It can get frustrating to find one with data lines.
There are poorly constructed cables and they sometimes break. Or, it’s a charging-only cable. But that’s not really a Garmin problem.
Charging-only cables are often provided with things like lights. I mark those (or throw them out).
One can also get “name brand” cables and look at them.