Factorio Forums

Hello, I'm still relatively new to the game.
There seems to be productivity modules in the output of assembly machines I have. I'm not sure why or how it got there. It seems to be in practically all of my copper wire assemblies. Why is that?

I think it has to do with downgrading the assembler or changing the recipe remotely out of a robot network, the extra module is put into a sort of trash slot.

Can't remember exactly what causes it, but it is along those lines.

Ah, that makes sense. I think I know what happened then.

At one point I over-estimated my electric output, and the productivity modules pushed it past it's limits. Instead of going around removing modules invididually since I had so many assemblies, I found it easier to just copy/paste a recipe that can't accept productivity modules.

After some testing just now, it seems like if you're close enough when changing recipes, those productivity modules that were in there will go into your inventory, but if you're far enough away it will go into those 'trash slots'.