sjgadsby: Ah, then that's new. Last time I checked no class 4's were available. FRZ: SDXC will be just like SDHC was when it comes out. Either the controller chip, or the bios/ios software will need to support the new file system and cell structure in order to properly read it. Then again, they may make them backwardly compatible. Who knows. They've done it before. But I think the nokia tablets will be able to handle them since, I believe, the supported formats are dependent on the IOS, and not the chipset itself.