I pre-ordered my iPad the day the order banks opened and have really enjoyed the device so far. It has so many features and the much larger than the iPhone screen is great for surfing the web from the couch and gaming.
The iPad also has a bunch of official accessories that are available as well. One of these accessories is the iPad Camera Connection Kit. The kit comes with two adapters with one offering a USB port and the other a SD card reader.
It turns out that the USB port adapter will work with other USB devices like keyboards and USB audio. The USB audio even works with VoIP according to reports. You can also connect a USB keyboard to the iPad using the adapter.