Amazon.com: Sedna PCI Express (PCIe) SATA III (6G) SSD Adapter with 1 SATA III Port (with Built in Power Circuit, no Need SATA Power Connector, Best for Mac), SSD not Included :
M.2 NVMe + M.2 SATA 80mm SSD PCIe x4 Adapter with Heat Sink - Micro Connectors, Inc.
Vantec M.2 NVMe SSD PCIe x4 Adapter - Micro Center
Sabrent NVMe M.2 SSD to PCIe Adapter Card with Aluminum EC-PCIE
M.2 NVME SSD to USB 3.1 Adapter Hard Drive for PCIe NVMe Based M Key B+M Key SSD | eBay
Buy StarTech.com Dual M.2 PCIe SSD Adapter Card - x8 x16 NVMe or at Connection Public Sector Solutions
M.2 Ssd To U.2 Adapter 2in1 M.2 Nvme And Sata-bus Ngff Ssd To Pci-e U.2 Sff-8639 Adapter Pcie M2 Converter For Desktop Computers - Add On Cards & Controller Panels - AliExpress
M.2 NVMe SSD PCIe 4.0 Adapter with Covered Heat Sink - Micro Connectors, Inc.