What happens if you use a PCIe NVMe SSD in a PCIe

PCIE 4 SSD in PCIE 3 slot : rbuildapc pci 4 ssd in pci 3 slot A PCIe NVMe SSD will work in a PCIe motherboard slot at PCIe speeds PCI-Express versions are backward compatible, meaning that you can use a pcie 4 gpu in pcie 3 slot Steps to determine the PCI Express version is supported by your motherboard

pci e x16 slot I have a pc setup i7 10th gen cpu in an asrock b460 This mb support in 1st pcie 16x, in 2nd pcie slot only 2x and it also has 2 pci-e 1x I have a