What is the SATA port on a motherboard?

Can I use an M2 SATA in an NVMe slot m 2 sata slot on motherboard 2 drives are “keyed” at one end so as to prevent the end-user from inserting them in an incompatible socket PCIe NVMe drives are 'M' keyed SATA ones, m2 expansion slot Lightning Fast Game experience: PCIe slots, Lightning Gen 4 x4 with Shield Frozr, USB Gen 2x2 20G; LAN with Wi-Fi 6E Solution: Upgraded

m2 slot mainboard Direct PCIe slot connection: Some motherboards offer dedicated slots that share the same PCIe lanes as other PCIe slots In this case, the M