Is an A46040 a Neje Max 3 or Max 4 laser?

I was recently gifted a used Neje laser. The frame is 750 by 460, It has an air assist module connected to the machine. I was under the imression that it was a Max 4 but the Z azis gives me an error code. On the laser module it shows that it is an A46040. I am not sure if this is in fact a Max 3 or 4.
Thanks in advance.


The green frame is max 4