Have you formatted the cards in the proper manner? If you have that many duds, it sounds very much like you haven't. There is a sticky on this at the head of the forum. Also, is your card module running at the right voltage?
Have you formatted the cards in the proper manner? If you have that many duds, it sounds very much like you haven't. There is a sticky on this at the head of the forum. Also, is your card module running at the right voltage?