Made with the professional photographer in mind, these cards provide the speed and capacity needed to work fast and spontaneous, Pretec"s new CompactFlash Card 233X marks a breakthrough in the area of flash memory cards, providing unmatched capacities of up to 24GB, at record speeds of over 35MB/second or 233x (read), and over 30MB/second (write) with metal housing to provide extensive ruggedness making the card resistant to external impacts.