Flash Memory: SD 512MB Secure-Digital SecureDigital SD Flash Memory Card

512mb Secure Digital Card. Secure Digital, SD cards, are a new generation memory device that offers an incredible combination of high storage capacity, fast data transfer rates, great flexibility, and excellent security. All this in a memory card roughly the size of a postage stamp! Coupled with a PQI USB Reader, this device can read those important pictures, retain that movie soundtrack or store that valued document. Based on non-volatile memory components and encased in a protective molding, they do not require power to retain the information stored in them. Since they are based on solid-state components they have no moving parts to skip or break down. This indeed makes them highly reliable!