The ability of the Ultra II SD Plus to act as a USB card makes it universally useful. No matter what type of computer I encounter, I can always take it from my camera and use the USB port to view images on the computer rather than on my camera. When travelling, this makes it extremely easy to upload images and thus clear more space on the card for more photography. Although I have yet to have any problems, I also appreciate having two choices for accessing the data should one or the other fail.