DSh
By default it's formatted in exFAT, so don't expect your devices will recognize it if they don't support this system. The MS standard allows only 32 GB for FAT32. But who cares? :) There are free tools to format all 64 as FAT32. I personally used Linux and got it done in couple minutes. It was recognized by Samsung Tablet Note 10.1 right away. I will definitely buy one more for my other devices. One point to the people complaining about the speed. Both your device and adapter should support the speeds over 20 MB/S. If you try to use/test this card using USB2, then don't complain. :) You got what you wanted.