iPad Camera Connection Kit has hidden USB capabilities
The iPad Camera Connection Kit is not only a collection of two dock connector dongles designed to help you get photos onto an iPad from nearly any digital camera. It turns out the kit can also help you connect other USB devices to an iPad, making it that much more useful to those looking to go iPad-only for some tasks.
One of the Camera Connection Kit's two dongles has a USB port for connecting almost any digital camera via its USB cable (the other has an SD card slot). Connecting a camera or other device that reports itself as a digital camera, including an iPhone, will allow you to download full-resolution images into the iPad's Photos app.
However, experimentation has reveled that other USB devices will work with an iPad as well. Confirming earlier rumors, TidBITS reported that some USB audio devices, like speakers, headsets, and microphones will also work when attached to the USB dongle. Headsets work especially well with Skype for VoIP calls, according to TidBITS. It's expected, though untested, that USB microphones commonly used for recording podcasts or other audio should also work with audio recording applications.
In addition to USB audio devices, TUAW reported that one user was able to plug in a USB keyboard and type text, just as if a Bluetooth keyboard or an iPad Keyboard Dock were being used. This capability doesn't seem especially useful compared to a portable Bluetooth keyboard, but it's there if you need it.
Other functionality may be possible, and the fact that these devices work at all is a small sign that Apple may expand USB support in the future. iPhone OS 4.0 will also add keyboard support to the iPhone and iPod touch, though the Camera Connection Kit doesn't currently work with either device. It's possible that this device support may spread to those devices, though in our opinion connecting USB devices to an iPhone makes a lot less sense than connecting them to the larger iPad. Source: [arstechnica.com]
Posted under: IPAD