Good catch on the PWM in the image, so in theory, this module should be easy to connect. Most modules that say 5V PWM will actually work with 3.3V PWM as well, though since the Rambo board is 5V, that is not an issue for AG. I’d not read the 0.04mm beamwidth for the A40640. Given my kerf in various materials, this measurement seems wishful.
AG, here is a picture with pins labeled. You want pin 45 which is middle row, left end. And the GND in Mike’s picture of the laser module can go to any of the column of ground pins.
