I bought this cable to replace one of my S616F I lost. So I was a little blocked because there were no mains charger. But when the first use I noticed that the tip is not very well followed suit in making my MP3 player ... In fact, it does not sink to the end. However my computer does recognize my device and I can now recharge and transfer new music! The only trick is to properly place the device on a stable surface during loading so that it does not detach the cable ...