Apple iPhone Universal Dock Adapter 3-pack

 Overview
These Dock Adapters enable your iPhone to connect to the iPod Universal Dock and other products that use the Universal Dock system. The adapters are also designed to enhance the acoustics of iPhone during speakerphone calls.
Simply insert the iPhone Dock Adapter into the Dock, then plug in your iPhone. When you want to connect an iPod to the Dock, pop out the iPhone Dock Adapter and insert the one for your iPod.
This package includes three Dock Adapters for iPhone