I took this as the key brand Sandisk gives me confidence (I SD Sandisk Extreme card for my SLR and Go Pro and follows very satisfied) By cons, somewhat disappointed by this key, it must be formatted as NTFS in order to copy HD movies (until the normal) Once formatted, the current flow is about 6MB / s write. Really very low compared to what we know ... So to avoid if you need to watch the latest movie you have downloaded. I put 2 stars for Ergonomics and satisfactory price for my taste