The iPad Dock for the iPad 2nd & 3rd Generation from Apple is a desktop dock, compatible with the 2nd and 3rd Generation iPad. The dock makes it easy to sync and charge your iPad. It connects to a computer using the USB dock cable that is included with the iPad, or to a wall outlet via the AC adapter that ships with the iPad.
Any adapters or cables that can be used directly with the 2nd and 3rd Generation iPad via its dock connector can also be used via the dock. If you use the Digital AV Adapter, VGA Adapter, or the Component/Composite AV Cable to connect the iPad to your TV, you can connect that cable to the dock and the iPad's video output signal will pass through to your TV.