R2034 2U 1 x PCIe X 16 to 2-slots PCIe X 8 w/ 7cm ribbon cable
PCIe splitter from x16 to 2x8 or 4x4, passive. - CPUs, Motherboards, and Memory - Linus Tech Tips
Amazon.com: PCIE to U.2 Adapter Card, PCIE X16 to 4 Port U.2 NVME SFF-8643/8639 Expansion Card, PCIE 4.0 U.2 Split Card with LED Indicator for Windows : Electronics
12 Pieces PCI-e Riser Express Cable Set 1X to 16X GPU Riser Adapter Extension Cable
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
Domqga PCIE Splitter,PCIE 1 To 4 Riser Card Blue Plug In Design 4 USB 3.0 Ports X4 X8 X16 Graphics Interface Adapter Port Converter,PCIE Riser Splitter - Walmart.com