Amazon.com: StarTech.com M.2. PCI-e NVMe to U.2 (SFF-8639) Adapter - Not Compatible with SATA Drives or SAS Controllers - For M.2 PCIe NVMe SSDs - PCIe M.2 Drive to U.2 Host Adapter -
Pci-e 3.0 X4 To U.2 Nvme Ssd Sff-8639 Nvme U2 Pcie Extension Cable Riser Adapter High-speed Transmission 32g/bps - Pc Hardware Cables & Adapters - AliExpress
Amazon.com: 3.2TB PCIe Gen3 x4 NVMe U.2 2.5" SSD for Dell PowerEdge Servers | Enterprise Solid State Drive in 14G 15G Tray Compatible in R7525 R6525 R650 R750 R750xs Rack Servers :
OWC U2 Shuttle for up to four NVMe M.2 SSDs in a 3.5-inch Drive