2.2 The 4PIN black plug wire is for the connection with Neje, Ortur engraver.
2.3 These 4PIN wire (white and black plug) is the our main connection wirefor the other brand engraver, you may try
one of them to connect. If it fails to connect, please change the order of wire, and the change
processing is in chart 4.16-4.17
4.16 Connection order of white plug wire 4.17 Connection order of black plug wire
4.13 Connection plug on rotary roller
4.14 White plug wire