Yes, you can install a 1x PCIe card into a 16x or 4x PCIe slot

Socket to PCI-Express 4x Slot Converter for Motherboard Expanding Extra PCI-E Slot details, buy Socket to PCI-Express 4x Slot

Intel® Z490, Z590, and Z690 motherboards What is a PCIe NVMe SSD? PCIe NVMe SSDs are solid state drives that use the high

4x4 turbo slot Both run 1x on the 4x slot

4x4 slot I have a 1050ti in 1st 16x slot, a bmd intensity pro 4k in 2nd slot and in the other 2 pcie 1x slots i have 2 bmd mini recorder