I bought this card because I only had two smaller cards for my camera - a Canon card and a Kodak card. Everytime I put those cards into my reader, it reads them on the first try. This one I have to remove and reinsert 6-15 times every time I want to download my photos! It's a SanDisk reader. I contacted them and they're suppsed to replace it, but their customer service sucks. I'm thinking about returning it and trying a different brand.