... + CNC DB25 Breakout Board adapter Kit CNC 3 Axis Stepper motor Driver ROUTER,MILL , 5. 0A + CNC DB25 Breakout Board adapter ... Current: adjustable from 1.5 A to 5A(1.5A,2.0A, 2.5A,3.0A,3.5A,4.0A,4.5A ... ,5.0A) Resolution: 1/2, 1/8, ... Optical-coupler. High quality with Surface-mount Tech. 3 Axis two-phase Stepper motor Driver 5. 0A + DB25 Breakout Board adapter Kit