These Dock Adapters enable your iPhone 4 to connect to the iPod Universal Dock and other products that use the Universal Dock system. The adapters are also designed to enable sound to pass through during speakerphone calls.

Simply insert an iPhone 4 Dock Adapter into the Universal Dock, then plug in your iPhone 4. When you want to connect another device such as an iPod or other iPhone to the Universal Dock, pop out the iPhone 4 Dock Adapter and insert the one for your device.