Hi there, I have just purchased and tried to use a Samsung 64 gig micro SDHC card in my new Surface Pro 3. It is reconized, but won't allow anything to be copied and it can't be formatted. I pulled the card and put it in with an adapter through the USB and it is all fine. For some reason the SP3 won't let me do anything with it and I get an error message that says 0x8007056d, whatever that is. please can someone help? I just want more memory and don't want to return the SP as I really like it! Nor do I want to do a refresh and nuke all my Office programmes! thanks!