SFF-8639

See U.2, U.3 and SFF-8639

U.2, formerly known as SFF-8639, is a computer interface standard for connecting SSDs to a computer. It covers the physical connector, electrical characteristics, and communication protocols. It uses up to four PCI Express lanes and two SATA lanes.

ref: https://en.wikipedia.org/wiki/U.2

U.2, formerly known as SFF-8639, is a computer interface for connecting solid state drives to a computer. It uses up to four PCI Express lanes. Available servers can combine up to 4 U.2 NVMe solid state drives

ref: https://en.wikipedia.org/wiki/NVM_Express#U.2_(SFF-8639)

keywords

NVMe NVM Express PCIe