The sdxc sd extended capacity memory card is designed to handle large volumes of data at high speeds and provide users with portable storage and speed for their camcorders or digital cameras sdxc cards are able to handle significantly greater amounts of information due to two advances in technology the exfat file system enables the sdxc card to handle large volumes of data while the uhs 1 interface transfers movies videos and picture with ideal speeds of up to 104mbsec sdxc uhs 1 ultr