M.2 NVMe + M.2 SATA 110mm SSD PCIe x4 Adapter with Heat Sink - Micro Connectors, Inc.
M.2 PCie Adapter for M.2 NVMe SSD - GLOTRENDS
NVMe M.2 SSD to PCIe X16/X8/X4 Card - Sabrent
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 -
Vantec M.2 NVMe SSD PCIe x4 Adapter - Micro Center