Features Multiple Functions For Versatility: This controller supports automatic probing, emergency input, limit switches, and electronic handwheels for enhanced functionality in CNC operations Four Axes Linkage Capability: Connect up to 4 stepper or servo motor drives, allowing for comprehensive control over multiple axes with universal input options for various devices High Pulse Frequency Performance: With a maximum step pulse frequency of 100KHz, this controller is optimized for precise CNC engraving and effective motor control, enhancing work efficiency Stable Operation With Isolation: Requires an external 24V DC power supply for USB and external port isolation, ensuring a stable system; includes a 0-10V output for spindle speed control through software Universal Relay Drive Outputs: Features 4 isolated relay drive interfaces to control spindle start, clockwise and counterclockwise rotation, and additional equipment for seamless integration Features: 1、MULTIPLE FUNCTIONS: The functions of this motion control card include support for automatic probe, emergency input, limit switch, support for connecting electronic handwheels 2、FOUR AXES LINKAGE: The USB interface board can connect four stepper motor drives or servo drives. 4 way universal input, can be connected to limit switch, emergency stop switch, probe switch, 0 return and other devices 3、100KHZ PULSE FREQUENCY: The maximum step pulse frequency of the motion control card is 100KHz, very suitable for CNC engraving, servo motor, stepper motor servo motor 4、STABLE AND CONTROLLABLE: The motion controller needs to use an external 24V DC power supply to isolate the USB and external ports, making the system more stable. And there is a 0？10V output port, you can use software to control the speed of the spindle motor 5、UNIVERSAL INTERFACE: 4 universal isolated relay drive output interfaces can drive 4 relays to control spindle start, CW and CCW, pumps and other equipment Specification: Item Type: Motion Controller Card Maximum Step Pulse Frequency: 100Khz Motherboard Dimension: Approx. 8 x 7.7cm / 3.15 x 3.03in Package List: 1 x USB CNC Controller Card 1 x USB Cable 1 x Driver Installation CD Note: Please allow 1？3mm error due to manual measurement. Thanks for your understanding. Package List 1 x USB CNC Controller Card 1 x USB Cable 1 x Driver Installation CD