I bought this item for my iPod shuffle 4th generation. But it was not working and so contacted the seller and he responded promptly advising that this works only for 2nd generation. So be careful to buy this is you have 2nd generation
Upload and charge your 2nd generation Shuffle through the USB port.Unlike the perfect fit cradle, there is no need to remove Shuffle from your protective cases in order to plug into the charging port.With this 2 in 1 cable adapter you can charge and transfer music simultaneously.Accessory ONLY. iPod shuffle® not included.Compatible With Apple®: iPod shuffle® 2nd Gen. 1GB / 2GB. Apple® iPod®, iPhone®, or iPad® are registered trademarks of Apple, Inc. Products are Apple® compatible and not endorsed by Apple, Inc.