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SD Express is a New Memory Card Standard That Leverages PCIe and NVMe

Time:06/29/18
In June 2018, the SD association released the new SD standard specification, “SD 7.0” which defines new “SD Express Card” and “SDUC”.

“The SD Association announced SD Express which adds the popular PCI Express and NVMe interfaces to the legacy SD interface. The PCIe interface delivering a 985 megabytes per second (MB/s) maximum data transfer rate and the NVMe upper layer protocol enables advanced memory access mechanism, enabling a new world of opportunities for the popular SD memory card. In addition, the maximum storage capacity in SD memory cards grows from 2 TB with SDXC to 128 TB with the new SD Ultra Capacity (SDUC) card. These innovations maintain the SDA's commitment to backward compatibility and are part of the new SD 7.0 specification. “ shared by Katsutoshi Akagi, Sr. manager of BayHub Technology Limited, co-chairman of Host Technical Working Group, SD Association.

The link to SDA announcement are below;

Whitepaper, “SD Express Cards with PCIe and NVMe interface” https://www.sdcard.org/downloads/pls/latest_whitepapers/SD_Express_Cards_with_PCIe_and_NVMe_Interfaces_White_Paper.pdf

Press Rlease, “SD EXPRESS – A REVOLUTIONARY INNOVATION FOR SD MEMORY CARDS” https://www.sdcard.org/press/SD_EXPRESS_A_REVOLUTIONARY_INNOVATION_FOR_SD_MEMORY_CARDS.pdf
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