I just bought a new Makerbase MKS DLC32 control board. Maybe a bit of a beginners question but why are they sold without the steppermotor modules? What can you do with theses controlboards without those modules? And what is the main difference between those modules?
Thanks for your reply!
Ostensibly: so you can install any of the many different stepper modules you prefer.
Actually: to reduce the selling price enough that you think you’re getting a great deal.
The various stepper driver chips have different characteristics, with older designs being easier to counterfeit / knock off and newer designs using better / different current control techniques.
To a good first approximation, there is no difference, because the circuit design & layout of the underlying PCB and the stepper modules pretty much negates any subtle differences.
Stipulated: excessive cynicism in full effect.
Protip: Pay attention when you plug the modules into the board:
Thanks for the info, the modules are color coded so that helps! 
While colour coding is good, they can still go in backwards!
Ahh I see what you mean. Physically they can, but that sure makes it unlikely.
FTFY. 
Also, you can still plug the little board with colors matched, offset by a pin like I did, and kill the board.
Memo to self: Next time, double-check!
I know, I’ve been there too.
I bought 2 new boards, just in case…
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