... to 36 VDCPhase Current: adjustable from 1.5 A to 5A(1.5A,2.0A, 2.5A,3 ... :AC,AConnect 12 to 36V DC power Supply B+, B- A+, A- Step+ (CP+), 5V Step- (CP-) pulse input EN ... current 0=full currrentCNC DB25 Breakout Board adapter stepper motor driver IIIBuilt in DB25 male connector. DB25 Output ... with Surface-mount Tech. sw_3AXIS_5A_001 CNC 3 Axis Stepper motor Driver ROUTER,MILL , 5A + CNC DB25 Breakout Board ...