Verbatim SDHC/SDXC (Secure Digital High Capacity) Cards are designed to be used in compatible digital cameras, portable music players, camcorders, smart phones, PC's or other consumer applications. SDHC/SDXC Cards use a FAT32 file system, a specification that was established for applications with higher capacity needs and are especially suitable for high-quality video.
The increasing use of high-definition video, high-resolution digital photography and mobile applications demands higher storage capacity and more demanding data transfer rates. Because of this, SDHC/SDXC cards guarantee a minimum sustained data transfer speed, not a maximum speed.