This USB 2.0 cable connects your iPhone or iPod - directly via a dock - for efficient synchronising and charging with the USB port of your compouer or for charging of the battery with an Apple USB Power Adapter (power supply) via a wall socket. This article is compatible with the following products:iPadiPhone 4SiPhone 4iPhone 3GSiPhone 3GiPhone 2iPod touchiPod classiciPod nano