M.2 to Razer adaptor, used in mining rigs. The current approach is to use M.2 to PCIe x4 adaptor and plug a razer in it. However I like skipping one flimsy connector and go straight to the razer's cable.
The M.2 pinout is not confirmed - I could not find reliable source of information about it. The mechanical specs are from https://cctupload.s3.amazonaws.com/attend.com.tw/upload/2016Oct/pdf/20161006095651984_1.pdf. The routing is based on testing a razer with an M.2 adaptor plugged in.
|1||M.2 M key fingers||U2||M.2 M KEY FINGERS||1||M.2 M key fingers|