... fit for NEMA17/23/34,special for NEMA43 CW1108 stepping motor drive* Low noise and high effective work capacity * With wide working ... ground connection in a better condition Motor interface port: For 2-phase,4-wire motor,connect with driver directly For 4-phase ... other four wires with driver For 4-phase,8-wire motor, winding and pairwise parallel connection.,then connect with driver( chart2 ...