The Apple iPad 10W USB Power Adapter is a 6 foot long power cord with a 3 prong plug, which allows you to charge your iPad anywhere that has a 3 prong electricity socket. You can connect the adaptor to your ipad keyboard dock or directly to your iPad. It also charges iPhone and all iPod models with a dock connector.
The Apple iPad actually comes with a standard 3 foot long adaptor, but most people find that it isn't long enough to connect up properly.
US customers:

