SUPERPLUS M Key SSD NVME M.2 SSD(Key M) Key B SSD to U.2 SFF-8639 Adapter SSD m.2 Enclosure(Not SATA Interface)
Samsung 970 EVO Plus SSD - 4TB (2TB x 2) M.2 NVMe Interface PCIe 3.0 x4 Internal Solid State Drive, 3,500MB/s with V-NAND 3 bit MLC Technology for Laptop Desktop and Crypto
Amazon.com: DATARAM 256GB M.2 M-Key PCIe NVMe SSD for 2013-16 MacBook, Mac Pro, Air, Mini, iMac : Electronics
M.2 - Wikipedia
Understanding M.2, the interface that will speed up your next SSD | Ars Technica