couldn't someone just buy one of those chinese sxm2 to pcie adapter boards and test continuity to get the pinouts? I have one that could take like 10 minutes
If you're willing to do the testing and post the pin out, I'll send it your way.
Would like to have it sent back when you're finished though, and I'd pay shipping both ways.
I do have the ground pins mapped out and could share that which should save some time.