... .Output current:1.3A-4.5A3.Mircostepping:1(1.8º),1/2,1/4,1/8,1/16,1/32,1/64,1/128,1/2561/5,1/10,1/25,1/50,1/125,1/2504 ... not be damaged, but the electrical machinery runs abnormally, shake , and output is small.Please check whether the wiring of electrical ... the driver has a jump5,installation dimension Stepping motor driver,1.3A-4.5A,high quality and reasonable price