
Genuine or rebranded copy of card. I accidentally received a fake renamed card and it wasn't easy to spot. I contacted Sandisk and they confirmed that it is indeed a fake card based on the serial numbers and pictures. Also, I checked the card to see if it is a small 4-8GB card or even a real 64GB card. It's a real 64GB card, but some kind of cheap Chinese I suppose. You can't always tell from the maps because sometimes they look pretty good. There were a few things that amazed me. 1. Yellow lock switch 2. Serial numbers and pictures on the back of the card 3. Supergold disc 4. Plastic (real ones look different)5. Front sticker (crooked and not perfect) 6. Speed test.7. Inner Instincts (depends on belly size and experience) I heavily loaded a 50GB card of wedding pictures and it handled it. I then did a black magic speed test and will post the numbers below. I contacted Amazon and they allowed a refund. I can't risk having a low performing card for weddings, especially for the price. If you can, please check your cards by verifying them through Sandisk services. All you have to do is email them the serial numbers on the card. Very easy and they reply within a day. I gave two stars because the Amazon service is fantastic. I also have several pictures of a fake and a real card. Hope that helps