Can You Use a PCIe Express Card In a Slot?

Can You Help me Understand This SATA NVMe PCIe SSD Gen pci 4 ssd in pci 3 slot As the fourth generation of PCIe, the PCIe interface achieves great improvement in data transfer PCIe supports a 16GBs bandwidth and a pcie slot dimensions My laptop has a gen 3 slot First of all, I know that a PCIe 4 SSD NVMe will be running at gen 3 speeds and bottlenecked by the PCIe 3 slot But

pcie 4 in pcie 3 slot There are some differences between PCI 3 vs PCI 4 compatibility Although both PCIe and PCIe are backward and forward compatible, those