A few months ago, as part of a larger package, I inadvertently ordered some of these cards for my D610 and D7000. I meant to order the 633x cards but I guess my mind was on something else and I didn't notice. And, because these were intended to be spares for cards I already had, I never noticed until last night when I needed to add a spare to my work bag for a photo shoot.
Now, the page for these cards on B&H states that they are backward compatible with earlier spec cards and there are some posts from other Nikon users about how great they work on earlier gear. However, I'm a bit gunshy when it comes to memory cards so I'm wondering if any of the rest of you have used these cards in your older gear (D610 and earlier) and, if so, how well they perform. In fact, no matter what gear you use, I'd be interested in what you think of them.
Also, do I need a special card reader for my computer. I'm using a Dell XPS workstation with built in SD card slots and Windows 7.
--Ron