I have a system 4 board with the 3.5 amp drivers and 3 x 1.8Nm motors and 1 x 1.24 Nm motors with the case and everything wired for parallel. Take a look at Roy's website (DIYCNC.co.uk) and look at what he is charging for his set up and get back to me with an offer if you are interested in them. They aren't doing me any good and would be better off being put to use. I am going to be cutting the back panel to the case sometime this week so that the XLR plugs can be mounted to it and set up complete. Good luck on your build and trust me listen to John S, going the other route if just a big pain in the back side trust me burned the Tee Shirt.

Michael