Is it okay to put Gen 3 SSD in my motherboards Gen 4 pcie slots?

can i run a pcie 4 0 in 3 0 slot   Dan can i put a gen 4 m2 in a gen 3 slot

All 11th gen and 12th gen and accordingly 500600 series mainboard support PCIE , it's nothing special and not rare Also most GPUs don't

It's worth noting that the PCIe standard is backwards compatible, so you can, for instance, use a PCI-e graphics card in a PCI-e slot without issue, hello dosto, is video mai mene apko ye samjaya hai ki aapka Graphics card agar gen 4

8899 slot Since Nvidia graphics cards currently generally force a fallback to , a PCIe slot will only run on , as PCIe x16 @16 and @8, Again I do understand that 20 lanes of PCIe beats the crap out of 40 lanes of PCIe or even , but that is as long as you got