gartail
I bid on a 64 gb micro SDXC on ebay which never worked to start out with and realized it too late to return.  The multiple issues I had with my newly purchased Samsung Galaxy Note 10.1 was caused by the inferior memory card.  All the problems with the tablet disappeared once this memory card was inserted.  Lesson learned, any technology accessories should be purchased from a reputable retailer like Amazon to ensure quality of product.