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 :
Sonnet M.2 2x4 Low-profile PCIe Card – Sonnet Online Store
M.2 NVME SSD PCIe 4.0 Adapter – EZDIY-FAB
Amazon.com: Sedna - PCI Express (PCIe) Dual 2.5 Inch SATA III (6G) SSD Adapter (Short Double Side SSD Version) (with Built in Power Circuit, no Need SATA Power Connector, Best for Mac),
M.2 NVMe SSD PCIe 4.0 Adapter with Covered Heat Sink - Micro Connectors, Inc.
Pci-e M.2 Nvme Ssd Adapter Pci Express 3.0 X1 M Key Connector High Speed Expansion Card Support 2230 2242 2260 2280 Size M.2 Ssd - Add On Cards & Controller Panels - AliExpress