SD Media Memory Card High Capacity (SDHC). SD High Capacity (SDHC) is the new SD memory card based on the SDA 2.0 specification and larger than 2GB capacity. Benefits include, larger capacity- file system changes from FAT 12/16 to FAT32, Higher Data Transfer Speed- SD Speed Class,. CPRM Copyright Protection (same protection as SD). Paper Blister Packaging. Speed Class: 6, enables the host to perform real time AV applications recording with SD memory cards. Write Speed: 6MB/Sec. Read Speed: 6MB/S