... 3 Axis Stepper motor Driver ROUTER,MILL , 5. 0A + CNC DB25 Breakout Board adapter ... CNC 3 Axis Stepper motor Driver ROUTER,MILL , 5. 0A + CNC DB25 Breakout Board adapter KitPower Input ... 12V to 36 VDCPhase 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, 1/ ... AC,AConnect 20 to 60V DC power Supply B+, B- A+, A- Step+ (CP+), 5V Step- (CP-) pulse input ...