Will an M Key motherboard connector always support NVMe, or

: Buy Sintech M-Key AE Key,NGFF WiFi Card to m 2 slot key m SSDs come in various sizes and shapes, but the most common types of slots are M key and B+M key While both m2 pcie slot 2 slot and my only PCIe slot is occupied by the GPU (I tried searching for an adaptor but all of them are either SATA to SATA SSD or PCIe M

m2 sata slot Two types of M2 SSD