installing Gen4 NVME on a Gen3 Motherboard

Yes, PCIe is backwards compatible as long as the item fits it The main issue is the slot is slower than the so it won't be as fast as

2x slots M2_1 slot - Supports PCIe x4

genius slot Furthermore, before buying a PCIe Gen4 SSD, consumers must first confirm processor and motherboard support for PCIe lanes If the host cannot support PCIe Gen4

gen4 ssd in gen 3 slot Just to be clear, you can run a PCIe SSD in a PCIe slot , it just runs at PCIe speeds Which kind of negates the purpose