Worth noting the testing equipment for this isn't that expensive these days. You can pick up an FNB58 USB tester for $60. You really shouldn't have to though.

Worth noting the testing equipment for this isn't that expensive these days. You can pick up an FNB58 USB tester for $60. You really shouldn't have to though. At the very least every phone on the market ought to be able to just read the e-marker chip and tell you what each cable supports. Very annoying that they don't because the information is there and they have a way to read it, it's just not exposed to the user.