P27F Series (x16/x8/x4/x1) Flexible x16 PCI Express Extender
Source PCIe x1 x4 x8 x16 to Dual PCI slots adapter pci express to 2 pci card With USB 3.0 Extender Cable for serial parallel sound card on m.alibaba.com
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PCIe x1 x4 x8 x16 to Dual PCI slots adapter pci express to 2 pci card With USB 3.0 Extender Cable for serial parallel sound card - Price history & Review
Amazon.com: GLOTRENDS M.2 PCIe X1 Adapter with M.2 Screw for M.2 PCIe 4.0/3.0 SSD (NVMe/AHCI Key M), PCIe X1/X4/X8/X16 Lane Installation, but Only PCIe X1 Bandwidth (PA09-X1) : Electronics