[themuffinman]

Well first of all I don't think there is any such thing as a 64gb micro sd since the format stops at 32gb, anything larger would be classified as an xd card if I am not mistaken, someone correct me if I am wrong. I am sure the tp2 will support up to 32gb micro sd. As far as speed that would depend on the class of the card, for example a class 2, class 4 or class 6, 6 being the fastest. I have an 8gb class 2 and it works perfectly, sandisc is the brand. I have used other brands like toshiba, transcend, sandisc to name a few and they all worked fine for me.