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 :
Adapter, U.2 to M.2 - 2.5” U.2 NVMe SSD - Drive Adapters and Drive Converters | StarTech.com
M.2 PCIe SSD and M.2 SATA SSD Adapter Card with RGB LED Light and Heatsink Support 5V RGB 3-Pin Addressable (ARGB)
Amazon.com: AMPCOM M.2 NVME SSD to PCIe 4.0 Adapter Card, 64Gbps SSD PCIe4.0 X4 Adapter for Desktop PC, PCI-E GEN4 Full Speed : Electronics
U.2 SFF-8639 NVMe SSD to PCI-e 4X Adapter. PC PitStop Data Storage Solutions - SAS Enclosures, DAS, NAS, iSCSI & FC SAN