iPod Adapter (iPod Classic 120 GB) for Apple Universal Dock

Ever wondered, what Adapter to buy if you already have an Universal Dock from Apple Inc.? After two hours of google and some deep reading in online stores, I discovered the productnumber for the needed adapter. It’s MA125G/A for the #9 Adapter. I think someone missed to synchronize the Spec. for the new iPod Classic with online stores and retailers. Even Apple doesn’t state that properly.