ADT-Link Graphics Cards Vertical Bracket PCIe 3.0 x16 graphics video card to PCIe 3.0 x16 slot extension cable for ATX PC-Case - AliExpress
PCI Express - Wikipedia
Amazon.com: ADT-LINK Riser PCI-E 3.0 16x to x1 PCIe x16 x1 PCI Express Riser Mining Graphics Card Extension Cable R13SC 25cm with Power Line (No Power Cable) : Electronics
What is a PCI Express 3.0 x16 slot? - Quora
Gaming PCI-E 3.0 X16 Riser Cable
Bifurcation on PCIe* 3.0 x16 Intel® NUC 9 Extreme/Pro Kits