These cards were purchased for use in Kindle Fire tablets but was not the proper speed (A2). The card is fully functional I just needed to replace with an A2 model. Full description: The SanDisk Ultra Micro SD Class 10 UHS-1 A1 256 GB SDXC Memory Card offers high-speed storage with a capacity of 256GB, perfect for use in various devices such as smartphones, tablets, and cameras. It is compatible with brands like Apple, LG, Samsung, and more. This memory card is ideal for those who require a reliable and high-capacity storage solution to store large amounts of data quickly and securely.
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