This has a big or minor problem depending on your needs. It doesn't sync with your computer if you haven't synced with a dongle before hand. My computer wasn't able to see my player until I used the dongle but I was still able to charge using this cable.So to be clear of what I mean is I can sync using this cable but only after using a dongle. If the dongle gets lost and I have to reinstall the software I won't be able able to sync using this cable. I might just have gotten a bad one because I don't see any other reviews that talks about this. Or maybe they didn't try this cable on fresh install of the software that was never used with the dongle.It is still worth buying just to be able to charge via usb.