pcie 4.0 slot

B650M GAMING WIFI6E (rev. 1.3) ... Featuring one or multiple PCIe 4.0 x16 slot and PCIe 4.0 M.2 slot support, GIGABYTE Motherboards are ready to work with the PCIe 4.0 devices to provide the superior performance.

Can I Use a PCIe 4.0 NVMe SSD in a PCIe 3.0 M.2 Motherboard Slot? ... versions are backward compatible, meaning that you can use a PCIe 4.0 graphics card or storage device on a PCIe 3.0 or PCIe 2.0 system.

Up to 128GB Unbuffered ECC UDIMM, DDR4-3200MHz, in 4 DIMM slots; 1 PCIe 4.0 x8, 1 PCIe 4.0 x8 (in x16 slot), 1 PCIe 4.0 x4 (in x8 slot)1 PCIe 3.0 x2 (in x4 slot)