Patazon Black Extension Dock Extender 30pin Adapter for iPod iPhone 4 4S
Worked okay when I first got it but then as time went on maybe a month or two the connection would no longer make contact.  The phone would have to lean back more and more until at one point the phone would not even charge or make connection with the computer.  Had to stop using the dock extender which meant I could not use the desk docking station unless I removed the Otter Box case and that was not happening.  Would not recomment buying this dock extender.