This accessory supports charging for the iPhone 4S?? iPhone 4?? iPhone 3GS?? iPhone 3G?? iPod touch (Gen 4) iPod touch (Gen 2) and iPod nano (Gen4) with most iPod docking stations</br>Snaps into any iPod universal dock and accepts universal dock adapters</br>Includes dock adapter for BOSE SoundDock I units</br>this accessory supports charging for the iPhone 3G?? iPod touch (Gen 2) and iPod nano (Gen4) with most iPod docking stations</br>The passPORT is specifically designed to fix the charging error associated with several iPod docking stations.</br>If the accessory you are intending to use does not initially support the audio</br></br>Product Description</br></br>iPod & iPhone Charging adapter for home docks</br><br/>http://www.amazon.com/gp/product/B001NXYXX8