What is UHS interface?

A high-speed bus interface

“UHS” stands for “Ultra High Speed” ― UHS has a high-speed bus interface that achieves high-speed data transfer performance. Theoretically, UHS-I standardizes data transfer up to 104 MB/s. The high speed of UHS-I can only be achieved by combining a UHS-I compatible memory card and a UHS-I compatible device. It works with non-UHS-I devices, but the performance is different than the performance with a UHS-I interface.

For more information, please refer to the official website of the SD Association:
https://www.sdcard.org/developers/sd-standard-overview/bus-speed-default-speed-high-speed-uhs-sd-express/

What is UHS Speed Class?
What is Video Speed Class?

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