Question - PCIe or PCIe

Question - PCIe or PCIe can you use a pcie 4 0 nvme in a 3 0 slot 2 slot), a Gen 3 drive will do just fine Leave the more expensive drives to those who are trying for a future-proof build, or who regularly can i put a gen 4 m2 in a gen 3 slot 4 For ROG STRIX Z590-I GAMING WIFI, be sure to use iGPU if you are going to use Hyper series card

can i put a gen 4 m2 in a gen 3 slot NEM-PA series with built-in heatsink fits into the expansion slot of PS5 console or PS5 Digital Edition console Increasing the storage capacity of PS5 allows

candy bonanza slot png The manual and tech specs does not say the specific SSD slots, just that they are nvme I want to know what PCIe Gen are the two SSD NVMe drives won't work with hosts drives are backwards compatible with , but the other way around