I got this to expand the memory storage in my Samsung Galaxy Note 10.1. The tablet and paperwork claim to support up to 32GB, but other reviews for these cards and the Note 10.1 said that a 64GB worked just fine. And work just fine it does.I store mostly music on here, as I've got over 22GB worth of music, which would have taken up most of the 32GB built in to the tablet. I also use my tablet for sheet music, so I needed to have the capability to have all that on there, too. So this was my best solution, and so far it's worked wonderfully.And, on top of that, it came with a MicroSD card to SD card adapter, making file transfers even easier. Overall, I would highly, highly recommend this product!