When I first got it I did not think it was going to work. I went to my guru friend's house and he had the adapter I needed to change USB to USB mini for the Pandigital. It still did not seem to work so I handed it to Johnnie who fiddled with it and then said, it is working! It has worked ever since. A couple of the keys do not work but the main keyboard does work. Don''t know how it started working, maybe try another adapter.
I don't know what to tell you. It works but I find it has a loose connection or something that causes the tablet to just shut the screen down and loose what I was doing. I didn't do anything special. It came with the adapter cable that might be the problem? Sorry I can't help ya!
It was plug and play for me on the ainol tornados, elfii, and flame.
Sometimes miniUSB and microUSB connectors get a little lint in them during shipping - make sure they are clean. If that doesn't work you might try going into system settings and insuring that PnP is enabled for the usb port.
I didn't change any settings. After the tablet has powered on then plug in the keyboard. See if that helps. If not there is a keyboard app that should help. I do not know the name of the app off hand though.