Features The CNC controller card supports 4-axis linkage and can connect 4 stepper motor drivers or servo drivers. The maximum step pulse frequency is 100KHz, the MACH3 motion controller is suitable for servo or stepper motors. The MACH3 motion controller supports automatic probing tools. The stepper motor driver board supports limit switches. The stepper motor driver board supports the connection of electronic handwheels. Features:Support for 4-axis linkage, you can connect four stepper motor drives or servo drives.Maximum step-pulse frequency is 100KHz, which is suitable for the servo or stepping motor.Support automatic probe tool.Support emergency input.Support for limit switch.Support for connecting electronic hand wheel.Need use external 24V DC power supply to isolate USB and external port, and to make the system more stable.Have 0-10V output port, you can use MACH3 software to control the spindle motor speed.4 general-purpose inputs, you can connect the limit switch, estop switch, probe switch, back to zero and other device.4 general-purpose isolated relay drive output interface, can drive four relays for controlling the spindle starts, forward rotating and reverse rotating, pumps and other device.Status LED, indicate connection status on the board. Specification:Interface board size: 9*6.3*2cm/3.5*2.5*0.8inJog handler size: 10*6*2.5cm/3.9*2.4*1inWeight: Approx.200g/7.1oz Package list:1 x USB CNC Controller Card1 x Jog Handler 1 x USB cable 1 x CD1 x Connecting Cable Note: New-style and old-style are shipped randomly Package List 1 x USB CNC Controller Card 1 x Jog Handler 1 x USB Cable 1 x Connecting Cable