[SmoothOperator]

My 16 GB memory card is running out of space and I want to expand to a larger memory card. I went on eBay and bought a Kingston Class 3 64 GB memory card, but upon insertion I had "fatal errors" and could not access the card. I cannot even format the card. I think I bought a card intended for a tablet. Sent it back and got a refund, but I still need to expand the memory. Can anyone give me some advice on which card I should look for to maximize my external memory for my Bold 9900? I don't know what is meant by Class 3, Class 4, Class X, etc.. I just want to expand from my 16 GB to 64 GB, if possible. Thanks for your help, guys.
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