AFIK, the Dauphin keyboard is only made with a PS/2 connection. I am using an USB to PS/2 adapter with mine.
Keep in mind that this keyboard is not really very nice. The keys are small. This makes typing difficult. I don't like the feel of the keys. I wouldn't use this product if was a full size keyboard.
What I like about the keyboard is it's size. Almost a perfect match for the ePods. The closest I've seen is the mini USB keyboard from Compuspex which is 0.5" wider and more expensive.
I also like history factor of using a Dauphin product. I believe the Dauphin DTR-1 was the first webtablet (they called it a pen based computer).
Click-here for a picture of it.
Electronics run on smoke, if you let the smoke out they won't work