This is the first time that I have been this much disappointed with Kingston product. I bought it for my Africa trip and it worked as expected with my Nikon D3100 during the trip. But at the end of the trip, without any warning, it suddenly failed and the camera ccouldn't recognize the card. I haven't taken it out, nor touched ever since I put it in the camera. I tried it with another camera to see the same result: it is not being recognized. You can imagine how it should feel like to have a failed memory card after taking hundreds of photos overseas.
I have another card of other brand and still used this as somehow I thought Kingston got better quality control in manufacturing, which is now proved not to be the real case.
Well, luckily my laptop still coupld read it and I moved all photos to the computer and reformat the card. It didn't work. I suspect that the critical information of the flash inside the card may got corrupted. The computer might be able to read it using information set by BIOS when it failed to fetch flash information from the card itself. I cannot be sure about that though. Now I have a useless 8GB Kingston card since no camera can access it. I am thinking retuning it if possible.