I would like to know the source for "some USB cords are for charging only." I have never read that anywhere, although there's a lot I haven't read. Curious about that though as I've looked for something to affirm that and haven't found it.
For some reason I have read of people experiencing what the OP describes. I have always assumed that some are of higher quality than others, but I don't really know. I have never experienced what the OP describes as all my cords have always worked - and they are from a variety of places.
It will be interesting to see what others more experienced & knowledgeable than me have to say.
I also thought that it could be the other cables but, I tried to sync my girlfriends Samsung charge and it worked but just not with my moto. By the way if I didn't see it with my own two eyes I probably wouldn't believe it ether lol.
Sent from my DROID RAZR