Features: The board can control up to six step motors running at the same time. With 16-channel programmable input interface, can be configured as limit, stop, and other functions. With 16-channel programmable output interface, can be configured as water cooling, fog cooling and other controlled peripheral devices. With 1-channel standard MPG interface for hand wheel pulse encoder. Spindle PWM output control; aluminum alloy case. USB interface, support for MACH3 software. DCDC electrical isolation, optical coupling isolation. Maximum 125K stepper motor control pulse output, suitable for most machine tool system. Specifications: Model: NVCM3V2.1 Type: 3 Axes; 4 Axes (Optional) Size: 16.5*9cm/6.5*3.5in Weight: 402g(approx.) Package Includes: 1 x Motion Control Card 1、The board can control up to six step motors running at the same time. 2、With 16-channel programmable input interface, can be configured as limit, stop, and other functions. 3、With 16-channel programmable output interface, can be configured as water cooling, fog cooling and other controlled peripheral devices. 4、With 1-channel standard MPG interface for hand wheel pulse encoder. 5、Maximum 125K stepper motor control pulse output, suitable for most machine tool system.