Thank you for the wiring diagrams Gorebar, This is what I have been missing. I have a laser module that is PWM but other than that it has the same labeled pinout on the laser board: 12 G P V N W + D M and was not sure how to wire it to the RAMPS 1.4 I will be putting the 12V+ to D9+ the GND to D9- and PWM to D6+ Someone please stop me if I have this wrong, I have already burned aby cmdrkruge - Laser Cutter Working Group