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Riser PCIe 4x Extension Cable M2 M.2 NVMe SSD to PCIe x4 adapter cards Riser CARD support PCI-E 3.0 x4 Full Speed R24SF 10CM Add-On Cards - Newegg.com
The Dell 4x m.2 PCIe x16 version of the HP Z Turbo Quad Pro
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U.2 SFF-8639 NVMe SSD to PCI-e 4X Adapter with Cable - Walmart.com
M Key M.2 PCIe NVMe SSD to PCIe x4 4x Converter Adapter Card Support M.2 PCIe NVMe AHCI 2230, 2242, 2260 2280 mm SSD