When I ordered my GoPro Hero 3 black, I ordered at the same time recommended the SDXC card by Amazon: the Sandisk 64GB Ultra SDXC Class 10. This configuration has been running for a few days then my gopro no longer recognized card. After extensive testing and research, I realized that the gopro had burnt my card ... simply! It seems that this is common. Incredible? do a search on your search engine of its kind "gopro sandisk Kill" and you will see. The two manufacturers are passing the responsibility for the problem and I have lost 50 sacrificed technological scammers. Otherwise, this gopro, it is very well ... when it does not crame the card that is in!