The SD Association has introduced industry standard symbols for the latest high-speed SDXC and SDHC cards. The first symbol (UHS-I) will ‘mark’ the fresh Ultra High Speed (UHS) interface which is backwards compatible and enables the transfer rate mentioned above – 104 MB/s. The second one is the UHS Speed Class symbol and it designates cards that support real-time video recording – for starters, this will be simply UHS Speed Class 1.
This symbol differs from the existing Class 2, 4, 6 and 10 logos that define minimum write speed. An additional Class 1 symbol on these cards promises real time recording of HD videos.The symbols is scheduled to appear next to the logo in new and available products.
Press release
New SD memory cards and devices bearing the following new performance symbols may now begin entering the marketplace:
*The new Ultra High Speed (UHS) symbol can be found exclusively on SDXC and SDHC products. SDXC or SDHC products with the UHS-I symbol offer the fastest bus-interface speeds available today, capable of supporting data transfer speeds up to 104 Megabytes per second. UHS-I quadruples the existing maximum possible speed of 25 Megabytes per second. UHS bus interfaces are backwards compatible. SDXC UHS-I and SDHC UHS-I memory cards achieve greatest performance when paired with a UHS-I device and allow consumers to record HD resolution videos, plus perform other simultaneous recording functions.
*The new UHS Speed Class symbol can be found exclusively on SDXC UHS-I and SDHC UHS-I products. UHS Speed Class 1 designates SD memory cards and products with a performance option designed to support real-time video recording. This symbol will be found on SDXC UHS-I or SDHC UHS-I memory cards. Consumers can realize the full potential of recording real-time broadcasts and capturing videos using a digital video camera by pairing their devices with UHS Speed Class 1 memory cards.
*The existing Speed Class symbols for non-UHS SD, SDHC and SDXC products are Class 2, Class 4, Class 6 and Class 10. They refer to the minimum write speed performance of the memory card. The symbols may be found on memory cards and devices, including video and digital cameras
