At first I had a little bit of trouble syncing my Samsung U740 with my computer using this cable, but I figured out that the cable somehow wasn't wanting to stay in all of the way for some reason. When I did get it sync'd it worked wonderfully. Music transfers went fast and without error. I highly recommend this. You don't really have to use the software that comes with it. Just use Windows Media Player if you have it and select sync. All you have to do is drag your music over and presto!