Can You Help me Understand This SATA NVMe PCIe SSD Gen

Will a Gen4 device work, and how poorly? It was on sale for the same price everywhere Finding an older 4TB device is possible, but maybe

2 SSD slots ) Gigabyte Aorus 10000 Gen5 SSD With all that in place, Gen 5 SSDs, equipped with either their

genie jackpots megaways slot Looking at Amazon there is PCIe Gen 3 NVME and PCIe Gen 4 NVME for sale I don't see this even mentioned on the Wikipedia page for NVM Express

genie jackpots slot BUT you go buy the off brand no name cheaper 1TB Gen 4 NVME for lets say, 70$ (6-7K read