... the wiring of electrical machinery is a mistakeSwitch Choice: (“ON=0,OFF=1”)1,Microstepping choice: SW500000000111111SW601010101010101SW700110011001100SW800001111000011Micro1/21/41/81 ... 51/101/251/501/1251/2502,Current choice SW101010101SW200110011SW300001111Current(A)1.31.82.32.73.23.74.24.5 3 ... Pulse choice:In the driver has a jump5,installation dimension Stepping motor driver,1.3A-4.5A,high quality ...