1. Supports up to 4-axis linkage control. The fourth axis can be set as the driven axis 2. Output pulse 100K, using minimum error interpolation algorithm, high machining accuracy 3. USB interface, suitable for any PC compatible computer such as netbooks, laptops, desktops, and tablets with USB interface. As long as the MACH3 can run, the control card can be used. 4. Driver free design, better compatible with various software and hardware environments (supporting WinXP and WIN7 systems) 5. Support automatic return to origin (zero return) The driven shaft automatically levels when returning to the origin Support automatic tool alignment Support emergency stop input Support limit switch access Support spindle control (PWM mode and relay mode) Provide 4-channel optocoupler isolated digital signal input Provides up to 12 digital signal inputs, with a default of 4 inputs Provide 4-channel output with optocoupler isolation relay Support handwheel interface Anti interference design, imported industrial grade components, high reliability Color:Red & Green Material:PCB Package Contents: 1 x USB CNC Controller Card 1 x USB cable 1 x CD