I bought these to install one in an indoor security camera and one in an outdoor security camera and neither of them work. I don't know why they don't work. I've searched Google for help and tried all the suggestions but they still don't work. So I think it's a problem with the product. I bought them specifically because they were intended for security cameras. Disappointed to say the least. I bought another 128GB micro SD card from another company and it works great in the same cameras.
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