If you would like your SoundDock Original to charge and play the Iphone, Ipod Touch or the later Ipods then you need the charge upgrade. We sell this in two forms: A kit with the tools and adhesives instructions and materials OR if your prefer, just the docking board with USB charge circuit. The upgrade takes about five minutes and is very easy to do (much easier than flat pack furniture!), Note that an advantage of the kit is that your dock connector will be replaced which is very useful if yours is worn or broken.