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About SD Standards
The SD Association is a global ecosystem of companies setting industry-leading memory card standards.
SD memory card and SD host device are the terms for licensed products that meet SD standards.* SD memory card standards are available in a variety of formats, capacities and speed options. An estimated 8,000-plus consumer electronics models manufactured by more than 400 brands worldwide rely on SD standards.
To learn more about how SD technology works, download specifications or join the SD Association, please visit our Technology Overview section or the Developers Resources page.
*SD, SDHC and SDXC are trademarks or registered trademarks of SD-3C, LLC in the United States, other countries or both. Also, miniSD, microSD, miniSDHC, microSDHC, microSDXC, smartSD, smartSDHC, SDIO and miniSDIO are all trademarks or registered trademarks of SD-3C, LLC in the United States, other countries or both.