I've already said everything in the title, but I will add that I might have had to read all the comments before buying this card associated with Extreme Card Adapter SD to CF Type II CF (4th Generation). At the connection level, it hangs then answers, in fact the symptom seems to be recurring to other owners of the same product. Personally, I think it's a power problem of the card that must be supplied with current continuously. I wanted to believe it, too bad, so call back to the Amazon service.