The Dell 4x m.2 PCIe x16 version of the HP Z Turbo Quad Pro
M.2 NVMe Edge to PCIe x16 Connector PCIe x16 to M.2 NVMe Adapter R43SG eGPU New | eBay
Amazon.com: Quad M.2 NVME SSD to PCI-E 4.0 X16 Adapter, High Speed 4x32Gbps Soft Raid Card with Individual LED Indicator Support 2230 2242 2260 2280 (ph44) : Electronics
Quad M.2 PCIe Adapter for NVMe/AHCI SSD - Drive Adapters and Drive Converters | Hard Drive Accessories | StarTech.com Europe
GIGABYTE Aorus PCIe x16 M.2: For Four NVMe Drives, X399 Compatible
M.2 NVMe to PCIe x16 Extension Cable
Zaqw PCIE X16 Expansion Card,M.2 PCIE Adapter,M.2 NVME SSD To PCIE X16 Adapter 4 Port High Speed 4x32Gbps Soft Card With Individual LED Indicator For Computers - Walmart.com
Amazon.com: SABRENT NVMe M.2 SSD to PCIe X16/X8/X4 Card with Aluminum Heat Sink (EC-PCIE) : Electronics