PCI-E 3.0 x1 Lane to M.2 M-Key SSD Nvme AHCI PCI Express Adapter Card PCIE SSD | eBay
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 :
Samsung 980 PRO PCI Express 4.0 NVMe SSD Review - PC Perspective
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 -
StarTech.com Quad M.2 PCIe Adapter Card, x16 Quad NVMe or AHCI M.2 SSD to PCI Express 4.0, Up to 7.8GBps/Drive, For - QUAD-M2-PCIE-CARD-B - Storage Mounts & Enclosures - CDW.com
PCI-E 3.0 x1 Lane to M.2 M-Key SSD Nvme AHCI PCI Express Adapter Card PCIE SSD | eBay