Lexar Media CompactFlash cards are individually speed rated so you know the minimum capability of the card. They use the same rating system used by th

Lexar Media CompactFlash cards are individually speed rated so you know the minimum capability of the card. They use the same rating system used by the CD-ROM industry, where data transfer rate of 1X equals 150 kilobytes (KB) per second. The higher the speed rating, the faster your camera will be able to write images to the memory card.