Perfect match with package does includes Motor driver with 4 5A MKS TB66003D printer motherboard MKS GenFeature In current 42 motor driver of 3D printer on the market is that the direct primary IC connect to motor driver IC the current consumed by each interface will not exceed 2MA The MKS Gen motherboard that we design has signal port which can output the signal from motor driver We suggest using 4988 8825 etc motor driver Generally what 57 86 stepper driver inputs is the optical coupling isolation mainly toprevent from interference Each motor driver has 3 inputs EN enable port controls motor switch PUL pulse port controls the movement of the motor position or speed DIR direction interface controls movement direction of the motor The driver current of general optical coupling interfaces is around 10MA onedriver actuates one motor One driver consumes most of 30MA control current after X Y Z Econnect to four general 57 86 motor driver that will need 100MA current at work It is easy to burn the 3Dprinter IC control board if build connection directly but for notenlarge current Note MKS CD expansion board can adjust the flow control signal to avoid motor drive with optical isolation generate press on main IC therefore Ramps1 4 MKS Gen and other main board with five large motor drive canoperatecompletely without pressure Usage Insert MKS CD directly into the driver slot leads the control signal from the above white card port Please note the