M.2 NGFF to Desktop PCIe x4 x8 x16 2280 2242 2232 NVMe SATA Dual SSD PCI Express Adapter Card - CPU Medics
Intel's SSD 910: Finally a PCIe SSD from Intel
M.2 NVMe SSD PCIe 4.0 Adapter with Covered Heat Sink - Micro Connectors, Inc.
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: Dual M.2 NVME PCIE Adapter Card, 2 x 32Gbps Full Speed PCIE 3.0 PCIE 4.0 X16 Expansion Card, M.2 SSD PCIE X8 M Key Hard Drive Converter Reader Express Adapter(ph45) : Electronics
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),