Toshiba has unveiled its first 4GB Secure Digital High Capacity (SDHC) memory card, due for availability in September.
The manufacturer said that the new memory card conforms to the SD memory card version 2.00 standard introduced by the SD Card Association which enables capacities greater than 2GB and features minimum SD Speed Class Ratings to achieve optimal performance for FAT32-enabled hosts.
The SD Speed Class Ratings specify a minimum sustained write speed for SDHC cards, and Toshiba is initially announcing a 4GB SDHC card that exceeds the Class 4 minimum write speed of 4Mbps.
In the future, cards up to 32GB could be developed that conform to this standard, the company said.
The latest high-capacity SDHC cards are designed to support video storage applications in camcorders and digital cameras, said Brian Kumagai, business development manager for Nand Flash at Toshiba America Electronic Components and Semiconductors.
However, because the file format differs, the SDHC memory card is not compatible with standard SD card readers.
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