I decided to purchase this since I have 3 different memory cards (SD + MSduo + SM ) and didn't to hassle with all the cords that each one had. But so far it works just fine, the ones I have at least. I guess it was worth it, got it for .15 but the shipping was a bit much. FYI, I use a MAC so I don't know what to say about the person who has uses VISTA on their PC.