The card is a brand new Patriot 32 gb sdhc class 10 card. What is interesting is that after I quick formatted it to NTFS, I was able to transfer all my files and folders from the slate HD to the sd card. Now , it only works if it is in the slate. For some reason it won't accept any data if I use it in any of my other computers' sd card slot. I wonder why? I would like to use my desktop to transfer some large files coz the desktop is much faster.