Can I insert a PCIe x4 card into a PCIe x1 slot?

What Should to Do With Extra PCIe Slots? pcie x1 slot function function, RAID Setup wizard, operating system installation function, and diagnostic functions PCIe x16 full-height half-length slots, plus 1x OCP slot pcie2 slot GLOTRENDS PA21 Dual NVMe to PCIe X8 Adapter Without PCI-E X1 slot I must say, this little adapter has exceeded my expectations

pcie slot bracket Graphic cards use the longest PCI x16 slots PCIe x1 interface has 36 pins arranged in pairs of 18 pins Out of 36 pins, only 6 pins are functional pins and the