DESC: This 4GB SDHC card offeres large-volume data storage and optimum performance with support for FAT 32 file formats. In addition, it has a Class 4 speed rating that delivers a minimum data transfer rate for high-level performance.Although identical in size to todays standard SD card, this card is designed differently and is only recognized by SDHC host devices. To ensure compatibility, look for the SDHC logo on cards and host devices. For added reliablity and durability, this solid-state SDHC card is built of nonvolatile memory components and have no moving parts that could wear out or break. A built-in write protect switch helps prevent accidental erasure of your data.