Memory Card Micro Lexar 300x SDXC 64GB class 10 worked a month without problem in my Galaxy Note10.1 ed 2014. Then I got a message meaning that it was no longer recognized. This has been solved by a removal / reinsertion of the card. I had 3-4 times this meme problem. Then nothing ... Map more recognized at all. I lost all my photos / holiday movie that I had put on it. I do not recommend this product