The SD Association (SDA) recently announced SD Express, which adds the PCI Express^® and NVMe™ interfaces to the SD interface. The PCIe^® interface delivers transfer rates up to 985 megabytes per second (MB/s) and supports backward compatibility with existing SD hosts.

PCI-SIG has built its reputation on delivering high quality PCI Express^® (PCIe) specifications that have doubled bandwidth on average every three years, while maintaining full backwards compatibility with prior generations.