What is UHS-1 ?

“UHS-1” or more accurately “UHS-I” stands for “Ultra High Speed” – 1 and is a speed class for SDHC and SXDC memory cards. UHS-I has a bus interface speed of up to 104 MB/s. An SDHC UHS-I card will work in any SDHC compatible device at lower speeds, but to take advantage of the UHS-I speed, a UHS-I compatible device is essential. An SDXC UHS-I card will work in any SDXC compatible device at lower speeds, but to take advantage of the UHS-I speed, a UHS-I compatible device is essential. UHS-I compatible cards and devices are normally marked with the symbol below ,”UHS-I” or “I” A speed class is also defined. = Class 1 .”UHS Class 1″