Dual M.2 PCIe NVMe Adapter Without PCIe Splitter Function (PCIe Bifurcation Motherboard is Required), Support M.2 PCIe 4.0/3.0 SSD Soft RAID Setup in Windows/Linux
PCIe 4.0: Everything you need to know, from specs to compatibility to caveats | PCWorld
Amazon.com: MSI A520M PRO Gaming Motherboard (AMD AM4, DDR4, PCIe 4.0, SATA 6Gb/s, Dual M.2, USB 3.2 Gen 1, HDMI/DP, Micro-ATX) : Electronics