Amazon has partnered up with SanDisk to release official microSD cards for the new Fire TV. These cards come in 16GB, 32GB, 64GB (currently unavailable), and 128GB sizes and are class 10 performance with speeds up to 48 MB/s. These microSD cards state that they are “the only ones tested and certified to work with your Fire Tablet and Fire TV.” Of course, that doesn’t mean these are the only brand microSD cards that will work. Just that these are the official ones and will likely be the brand of 32GB card that is included with the new Fire TV Gaming Bundle. The cards can be pre-ordered now and will be released September 30th.