You do realize where you have your pot set is around 1.0v correct? Thats really high...if you had it hashing at full speed at that voltage without proper cooling you most likely fried it. These are not designed to "wing" voltage settings and hope for the best. Where did you have it plugged in when it went up in smoke?
it wasnt hashing at all, i didnt even touch anything on it, not the pot not the other things,
I downloaded the driver and bfgminer, installed the drivers, pluged the usb into the front USB 3 port of my pc and smoke instantly started comming out so i pulled it out again
It was as i took it out of the box, didnt mess with changing anything not even pool setup in the bfg
P.s.to be honest i read upon the pot just now after seeing u write about it