What are PCIe x1 Slots Used For?

PCIe x1 to PCIe x16 slot adapter - PEX1TO162 pcie x1 in x16 slot Install a low profile video card into a system with only a x1 PCIe slot • Install x4 or larger PCIe cards into a system with only x1 PCIe slots available pcie 1 slot P35 boards can only allocate x1 or x4 lanes to the second PCI-E slot Your card is definitely in X1 mode, GPU-Z doesn't truncate numbers like

pcie 30 in 40 slot Hi everyone, I want to upgrade my custom build TrueNAS to 10GbE However, I find that the motherboard only remain a PCIe x1 (in x16