I recently upgraded my laptop to a Thinkpad T470s, which supports M.2 NVMe, and M.2 Sata. I upgraded from a 500gb NVMe drive to a 1TB M.2 sata drive. Why do I say upgraded if it is slower? Well, in a laptop, power usage is hugely important, as is heat. To prevent throttling on the CPU, less heat is better. I did a lot of research, and found that the sata based M.2 drives consume less power, and generate less heat. For my purposes the sata speed is sufficient. :)