M.2 to PCIe x16 Graphics Card Adapter Cable for M2 NVME GEN4 to PCI-e 4.0 X4 CPU | eBay
PCIEX16E-844S | PCIe x16 edge connector to one PCIe x8 and two PCIe x4 Slots riser cable | x16 to x8 and x4 PCIe bifurcation riser cable | PCIEX16E-844S
PCIE 4.0 NVME Adapter PCI Express x16 to 4 Port M.2 M-Key NVME SSD Expansion Card Riser Full Speed 256G Support Bifurcation Raid - AliExpress
PE4C V1.2 (PCIe x16 Adapter)
ONE STOP SYSTEMS PCIe 3.0 x8 Dual-Port OSS-PCIE-HIB38-X8-DUAL
Dual M.2 PCIe SSD Adapter, NVMe / AHCI - Drive Adapters and Drive Converters | Hard Drive Accessories | StarTech.com