Protective function External 1224V wide voltage input with a reverse polarity guard to safeguard the card set from electrical mishaps. Easy connection Supports both common anode and common cathode inputs at 5V level with optocoupler input for stepper motor drivers. Includes a 5 axis interface cable socket (HX2.54) for straightforward connection to stepper motor drivers. Broad compatibility Works with Windows XP, Windows 7, Windows 8, Windows 10, as well as tablet computers and 64 bit systems. Suitable for a wide range of operating environments. Optocoupler isolation All inputs are optically isolated to protect the computer. Provides an optically isolated 010V analog output for spindle speed control via a frequency converter input. Use scenarios Build or upgrade a 4 or 5 axis CNC milling machine or router that runs on a 1224V supply, using the HX2.54 interface to connect to the stepper motor drivers. Deploy in an educational lab or hobbyist workshop, connecting to a Windows PC or tablet with optical isolation to protect the host computer while controlling multiple axes. Integrate with spindle systems by using the 010V analog output to drive a frequency converter input for precise spindle speed control in CNC applications.