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...Mach usb interface board instruction bl usbmach v mm m functions and features completely support software windows xpwinwinwinsupport bit system tablet pc wide range external power supply voltage vand has preventing reverse connection function all the input signals are separated by photocouplerscan be connected to estopprobe limit switchs make your computer safe analog output photocoupler can frequency converterusing control spindle speed pwm is available used controller that controlled four ports availablecan relay modules with photocouplers flood mist etc manual stepper motor drivers using common anode or cathode note should have for also provide axis xh p socket connectormake it easy connect port names printed on funtion wiring diagram conventer g f w n a pwmoutput d mpg hand wheel gnd in estop probe home connector reserve stepping o x y z c u t i r l...