The m.2 adapter is not specific in that it will work with ahci and nvme drives.Clarifying question, I read several pages of comments. I have a 2014 15" mbp, I would need an nvme with 512 sector size, and an ahci to m.2 adaptor. Are there some drives and adapters that don't have sleep issues with the 2014 15"? It seems like some people have the right combination to work fine??
Some nvme drives can be formatted in 4k, 512, or both. Either is fine with High Sierra and Mojave but Sierra needs 4k.
There is no drive and adapter combination that doesn't have sleep issues with a stock Apple bootrom. To prevent sleep panics, 2013 and 2014 MacBooks must be flashed with a modified bootrom.