Can anyone explain the purpose of a 32 gig NVMe SSD? I think it's quite an apple thing to install such a stupidly tiny drive into a computer, but on the other hand it doesn't seem right. This can't be a system drive can it? But what else could it be? This is like an impractical, high-speed USB drive that requires disassembly of the computer to remove...
It's for the "Fusion Drive." It was just used as a cache basically. You had a larger, slower drive behind it for capacity, this just held frequently accessed data.
This. I had one in an iMac a while back.