x4 PCI Express to M.2 PCIe SSD Adapter - Drive Adapters and Drive Converters | StarTech.com
Asustek's adapter provides M.2 SSDs up to 4GB/s of bandwidth | KitGuru
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Amazon.com: Rivo PCI-E Riser PCIe M.2 PCIe SSD to PCIe Express 3.0 x4 Adapter Card - Supports M2 NGFF PCI-e 3.0, 2.0 or 1.0, NVMe or AHCI, M-Key, 2280, 2260, 2242, 2230 Solid State Drives : Electronics
M.2 NGFF NVMe SSD to PCIE 3.0 X16/X8/X4 Adapter with heatsink for 1U/2U Serve... 889957091152 | eBay