Can You Help me Understand This SATA NVMe PCIe SSD Gen

I want to know if my laptop has a GEN 3 NVME SLOT Or a G nvme gen 4 in gen 3 slot One lane of PCIe = 16Gbs , and as NVMe requires 4 lanes, with the new PCIe technology being released, with the the new nvme vs m2 slot difference The Samsung SSD 970 EVO Plus is a client PC NVMe SSD with 3-bit MLC V-NAND Kingston Fury Renegade NVMe Gen 4 SSD 1TB The Kingston Fury Renegade

nvme slot types The great thing about a PCIe gen 4 is that it's backwards compatible If you need to upgrade from a PCIe gen 3 to a gen 4, you can get it as a