PCI-SIG^® has enabled PCI Express^® (PCIe^®) technology to be cost-effective and easy to implement by supporting multiple form factors for a variety of applications.

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.