But the reason this hasn't worked before is that the NT lacks the software. So in order to get this to work he had to cobble together patch that added software support for USB Host. As you can see from the video below, he did get it working.But it is a work in progress, and he has posted the working code so you can hack your NT.
BTW, this isn't the most unusual thing that I've seen the NT do. No, I think watching it play a Youtube video was a bigger surprise.
Do you recognize the voice? This is one of the hackers working on porting CyanogenMod to the HP TouchPad. He shot all those videos, too.
via XDA Forums