Kingston Data Center DC1000B - SSD - 240 GB - PCIe 3.0 x4 (NVMe) - SEDC1000BM8/240G - Solid State Drives - CDW.com
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 :
Amazon.com: SSD PCIe NVMe 1TB Dogfish Internal Solid State Drive PCIe 3.0 x4 NVMe High Performance Hard Drive for Desktop Laptop Includes SSD 240GB 250GB 500GB 1TB (1TB, M.2-PCIE) : Electronics
Amazon.com: Western Digital 240GB WD Green SN350 NVMe Internal SSD Solid State Drive - Gen3 PCIe, M.2 2280, Up to 2,400 MB/s - WDS240G2G0C : Electronics
Crucial BX500 240GB 3D NAND SATA 2.5-inch SSD | CT240BX500SSD1 | Crucial.com
OWC 240GB Accelsior 1M2 NVMe PCIe SSD at MacSales.com