Have the card center in February 2012 purchased from Amazon and has since operated in my Nikon D90. With the speed I was totally satisfied, but there never actually measured what. Often use a card reader for transferring the images and let them therefore not permanently in the camera but they often gather. Early December in 2012 (and 5000 camera shots later) it is then dropped when removed from the camera apart. At least the plastic casing, the chip was still in order. I could still easily transfer images to a PC. But the write protection has gone in and the map was of course useless.
Amazon written briefly, may return map, get back the purchase price from January immediately - this is the seventh heaven customers.
After almost 10 months she made the physical opponent, I think technically she had held for a long time, hence 3 stars.
