Totally support MACH3, KCAM4, EMC2 etc. host computer software that support the parallel port; leads to allthe parallel port output pins of all 12 data transmission , which can control the five stepper motor driver; with 5-way input interface, you can access the limit switches and emergency stop switch, reset, and the knife etc. 5-way input LED indicates the enter status; with the way 12A relay control, normally open, normally closed leads, user-friendly connection; adopt 5V USB power supply or external power supply to facilitate the access of external power; external drive enable signal amplification, filtering, enhancement; shaping pulse, the direction signal , enhanced load capacity , data transfer speeds up to 10MBit/S; output pins is with extended interface, can use 2.54mm pin or 2.54mmXH -Block The interface board use high-performance three-state busdriver 74HC244 and Schmitt inverter 74HC14, after amplification, rectification, filtering of the input signal, the output signal drive capability will be stronger and more stable. Increase the 5V power inputport to solve the bad output current of the computer `s USB port power output capability , increase the output of the input light indication and relay output instructions to make the operation more convenient to use , the interface board is DB25 pin , well transmiss MACH3 and the controller signal to the drive. This interface board is cost-effective choice for CNC customers. Package contains: 1PCS x 5 axis CNC Breakout Board 1PCS x USB Cable1PCS x DB25 Cable