I have been using my D400 for about a year now. When I started out I would remove the CF card and drop it into my computer and remove the pictures. After 60 days or so I started bending pins in the CF reader in my computer. I got the pins strightened out and got the pictures off the card and promptly chucked it in the garbage because I dident want a bad card to bork my sexy new camera ( a good reason to upgrade too ). I was over at a friends house using his computer to offload pictures ( exact same computer too ) and the pins bent on his too. Mind you I am not rough on my stuff. I like it FAR to much and had to do a TON of convincing toget the camera in the first place. I started using the USB port to download the pictures. This has worked OK so far but I think the USB port on the camera is starting to get tempermental. Can I use a CF to SD in this camera? I dont think there is any way to damage SD memory short of intentionaly doing so and I have alot of high quality SD sitting around that I use in my camcorder.