PCIe x16 switching to x8 even if no 2nd GPU connected?

can you put a pcie x1 in a x16 slot   Dan can you use ddr5 in ddr4 slot

The smallest PCIe slot will run at x1 speed, while a full-size PCIe slot will run at x16 It can still be used in the available x8 and x16 slot

NI PCIe 6612 has x1 Form Factor and maximum bandwidth for x1 configuration is 250MBs It doesn't change if you put x1 card in x2, x4, I explain in this video the Types of PCIe slots, how you can identify them, and also what their

g2geasy slot NI PCIe 6612 has x1 Form Factor and maximum bandwidth for x1 configuration is 250MBs It doesn't change if you put x1 card in x2, x4, Yes, a PCI-e x1 sound card will be compatible and physically fit in a PCI-e x16 slot The x1