12Attaching your iPhoneAttaching your iPhone is a procedure that shows you how to attach your iPhone to the System(using a universal dock adapter). The procedure provides you with step-by-step instructionsand graphics to help you learn how to complete this task. Attaching your iPhone to theSystem enables you to access the music stored on your iPhone, so you can listen to your musicusing the System’s built-in speakers.To attach your iPhone1) Select one of the three universal dock adapters for the type of iPhone you have (see thenote below for details).There are three universal dock adapters that come with the System–one for an iPhone,one for an iPhone 3G/iPhone 3GS, and one for an iPhone 4. On the underside of each of theuniversal dock adapters is a number to indicate which universal dock adapter goes with whichtype of iPhone. The iPhone uses universal dock adapter number 12, the iPhone 3G/iPhone3GS uses universal dock adapter number 15, and the iPhone 4 uses universal dock adapternumber 19.2) Looking at the front of the System, line up the universal dock adapter with the dockingtray (the docking tray connector fits through the opening in the middle of the universaldock adapter).3) Push the universal dock adapter down into the docking tray until you hear it click intoplace.