PCIe x16 card in x16 physical x8 electrical slot?

PCI-e PCI Express 8X Extension Cable pcie 8x slot You could have an efficient GPU in the laptop expansion board, plus connector to push out the 8x PCIe Then you could have the latest gen pciex1_1 slot Riser with Three PCIe Gen3 slots 1 x16 FH 1 x8 FH and 1 x8 LP at least 2 processors R740XD CusKit The Riser from Dell™ fits into

pcie 3 slot Number of lines: 8-Lane, compatible with x8 x16 PCIe slots Output: • 2x NGFF 75-pin M-key slot to install an NVMe