PCI-e Express 1x to 4 Port 1x Switch Multiplier Splitter Hub Riser Card with USB 3.0 Cable - Newegg.com
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
Pciex16 Nvme M.2 Raid Display Card To Sata 20 Ports Adapter Card Jmb585 Chip Pcie3.0/4.0 Motherboard Pcie Splitter Hub Expansion - Pc Hardware Cables & Adapters - AliExpress