I wouldn’t know. Looking at the pictures it looks like it might be different board. A different layout on the panel. But that doesnt mean it wouldnt work with the A/X 20 Pro
Found this on line if its any help
A link to the product would be nice… 
Just search for the above. Its all over the place
https://www.aliexpress.us/item/3256806959588613.html?gatewayAdapt=glo2usa4itemAdapt
Considering this replacement motherboard states “…Replacement For A20 S20 X20 X30 S30 A30 X40 S40 A40 PRO X40 MAX Laserbox ESP32 V1.0,” - would seem to indicate that this motherboard is applicable for all these particular models. Therefore, the M100 laser module, which is mounted on the X/A20 lasers, should also work with the motherboard of an X/A30 laser.
You would think so. This board is also available on Amazon. A little cheaper and quicker delivery
I searched Amazon and did not see it. Could you possibly provide a link please?
Do you think the motherboard is bad?
I not clear how we ended up from a 5 to 4 pin connector and now we’re talking about a controller replacement?
This isn’t going to change the problem you have, even with a new motherboard…
Good luck
It’s pretty straightforward. The AIC1 controller - which as you’re aware - has the ability to control air assist - and this controller’s standard harness connection to a laser module is a 5 pin female. My X30 Pro with the M150 laser module is 5 pin male - so no issues there. Since the AIC1 Controller is compatible with the X/A20 Pro - as well as the X/A 30 Pro [per Atomstack] - Atomstack includes a 5 pin to 4 pin adapter. This will allow the AIC1 to connect to an M100 laser module - which has a 4 pin male connection.
After the purchase of my X30 - I expanded the workspace with an E85 extension kit so my working area is 800mm x 850mm. I received a complete set of rails, X gantry, and a controller with the E85 kit, and moved the controller that came with the basic X30 set up to the extension set up. As such, I basically had another laser set up [400mm x 400mm], but w/o a laser module.
I then purchased an M50 [10W] laser module and installed it on that spare set up. It included a PCB board that reduced the voltage from the 24V power adapter that came with the initial laser, reducing the power to 12V. All was working fine until I tried to replace the M50 with the M100. I did purchase a 24V power supply to accommodate the M100. I then purchased an AIC1 controller to use with the M100 - but can’t seem to get it to fire. It produces a dot when hitting the fire button under move, but it won’t cut or burn anything. So I’m trying to figure that out. Even with the AIC1 controller attached with the 5 pin to 4 pin utilized to connect to the M100 - nada. So I think I had a defective M100 and returned it and am awaiting a replacement this coming week, I hope.
I believe I follow you.
Either control board should control the laser. If there are options that you’d like with another or upgraded board, that’s great.
Without any information on pin functionality, we can’t make suggestions without the possibility of damage to the hardware.
Since a Laser module only requires power and the pwm signal, that generally limits how many pins you need.
Many of the higher power laser modules draw lots of current… Many control boards cannot supply enough current to the module, so they make adapter boards…
Double the voltage, then half the current is required for the same wattage.
Have fun 
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I also posted on the Facebook Atomstack User Group [15.5k members] and received feedback from several that the AIC1 Controller will work with the M100 module. I hope all y’all are correct. Considering I can purchase a ATEZR L2 Laser Engraver with Air Assist - 24W output - for $219, I have alternatives for a 20W+ laser.
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Received M100 laser module replacement today and voila! - works like a charm with the AIC1 controller. This confirms the other M100 laser module was defective. Used the 5 pin to 4 pin adapter connector [M100 is a 4 pin module] and everything works. Phew… Thanks again for your input.
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