M.2 - Wikipedia
https://en.wikipedia.org/wiki/M.2M.2 modules can integrate multiple functions, including the following device classes: Wi-Fi, Bluetooth, satellite navigation, near field communication (NFC), digital radio, WiGig, wireless WAN (WWAN), and solid-state drives (SSDs). The SATA revision 3.2 specification, in its gold revision as of August 2013 , standardizes the M.2 as a new format for storage devices and specifies its hardware layout. Buses exposed through the M.2 connector include PCI Express 3.0 and newer, Se…
NVM Express - Wikipedia
https://en.wikipedia.org/wiki/NVM_ExpressNVM Express (NVMe) or Non-Volatile Memory Host Controller Interface Specification (NVMHCIS) is an open, logical-device interface specification for accessing a computer's non-volatile storage media usually attached via PCI Express (PCIe) bus. The acronym NVM stands for non-volatile memory, which is often NAND flash memory that comes in several physical form factors, including solid-state drives (SSDs), PCI Express (PCIe) add-in cards, and M.2 cards, the successor to mSATAcards. …