1、BROAD COMPATIBILITY: The control board set boasts extensive compatibility, it supports for Windows XP, for WIN7, for WIN8, for WIN10, as well as tablet computers and 64 bit systems. It provides an ideal solution for various operating environments. 2、OPTOCOUPLER ISOLATION: All input signals are optically isolated to ensure computer safety. Provides optically isolated 0‑10V analog voltage output for controlling spindle speed via frequency converter input. 3、VERSATILE CONTROLS: Offers optically isolated PWM output (5V level) for controlling other PWM controlled spindle speed adjusters. Provides 4 output ports (5V level) for connecting relay modules to control water cooling, spray, etc. 4、EASY CONNECTION: Can connect common anode or common cathode input, 5V level, optocoupler input stepper motor driver. Comes with 5 axis interface cable socket (HX2.54) for easy connection to stepper motor drivers. 5、PROTECTIVE FUNCTION: Armed with an external wide voltage input of 12‑24V, the card set includes a reverse polarity guard feature. This precautionary measure ensures that the card set is safe from potential electrical mishaps.