XPS 8700, bottom slot is wired only for PCIe x1, NOT PCIe x4

What is the difference between PCIe Gen 3 and PCIe Gen 4? pcie x1 slot function M · NVME Adapter PCI-E x1 to M · NVME M · Dual Slot M · NVME SSD M2 PCIE 1x Adapter PCIE To M2 Adapter M · Multi-Function USB Hub eSATA SATA Port pcie cem slot Using a PCIe x1 card in a PCIe x16 slot will not significantly affect your computer's performance, as the card will still function and

pciex1 slot Figure 2 The standard PCI Express slot sizes on computers today are x1, x4, x8, and x16 Software compatibility is also ensured by the PCI