Before you enjoy the sound, you need to install the proper insert in the dock. You can use one of the inserts that come with your SoundDock system or you can use the supplied Universal insert for dock adapter, which makes an Apple® dock insert work with your SoundDock digital music system. Use the chart included in the carton to determine which insert or adapter to use with your iPod®.
Removing and installing inserts
To install the proper insert:
To use the Universal insert for dock adapter with an Apple insert: