can i put a pcie 4.0 in a 3.0 slot

I am going to put an M.2 to five port SATA3 adapter in the PCIe 3.0 slot. The adapter I am using is PCIe 3.0 x2 so it will have about 1,700MB/sec of total bandwidth.

Learn whether PCIe 4.0 NVMe M.2 SSDs will work in PCIe 3.0 M.2 motherboard slots. ... Learn whether PCIe 3.0 NVMe M.2 SSDs will work in PCIe 4.0 M.2 motherboard slots.

For example, a PCIe 4.0 graphics card can be inserted into a motherboard’s PCIe 3.0 slot; however, the Gen 4 card’s bandwidth would be bottlenecked by the Gen 3 slot’s bandwidth limitations.