... not to damage the module2,GND:DC power cathode3,A+,A-:Stepping motor one winding4,B+,B-:Stepping motor other ... current of the winding of the electricSwitch Choice: (“ON=0,OFF=1”)1,Microstepping choice: SW40101010SW50011001SW60000111Micro11/21/41/81/161 ... /321/642,Current choice: SW11010101SW20010011SW30001111Current(A)0.210.420.630.841.051.261.53,installation dimension Digital ...