This is the first one in the series of post on Apple accessories for the iPad.
Here is what Apple had to say on this accessory:
The Keyboard Dock combines a dock for charging your iPad with a full-size keyboard. The dock has a rear 30-pin connector, which lets you connect to an electrical outlet using the USB Power Adapter, sync to your computer, and use accessories like the Camera Connection Kit. An audio jack lets you connect to a stereo or powered speakers.
The two images below show Apple’s iPad Keyboard Dock:
