4 x DM556S stepper motor driver. DM556S igital Stepper Motor Driver (20-50VDC, 1.0-6.0A). 4 Axis CNC Kit Nema23 Stepper Motor 425oz-in+Driver+USB Mach3 Card+36V Power. 1x Mach3 USB Motion Card STB4100 V2.1.
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