USB Controller Board -MACH3 cnc USB interface board Highlights generic brand MACH3 cnc USB interface board Description: 8-port optically isolated input interface, 3-port optically isolated output interface for digital data ordinary. 1 port 0-10V spindle speed analog output interface (can be changed to PWM output). It can support 100kHz pulse output for each axis of the 4-axis stepping system. ARM motion control chip. USB interface, support Mach3 software. Specification: Material: Plastic Size Chart: Size: Approx. 81x51x31mm / 3.19x2.01x1.22 inch Package includes: 1 Piece Control Board 1 Piece USB Cable Note: Please allow 1-3mm measurement deviation due to manual measurement. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color shown on the pictures.