Configured as an SD card, we popped it into a digicam and immediately started shooting pictures and movies. With 1.0-GB of memorable real estate nothing could stop us. That's 130 6-Mp images -- or ...

To find out why, we need to take a look under the hood at how SD cards deal with storage capacity. A rare 4 GB card produced piror to the ratification of SDHC. Compatibility of such cards is ...