Support automatic probe tool., Support emergency input. Better than Truly Bridal & Manly stuff. Specifications: - Support for 4-axis linkage, you can connect four… CNC MACH3 USB 4 Axis Network Interface Controller Card For DIY Mini CNC Engraving Machine - 100KHz Breakout Control Board 12-24V Support for limit switch Maximum step-pulse frequency is 100KHz, which is suitable for the servo or stepping motor Support automatic probe tool USB MACH3 100Khz Motion Controller Card Breakout Board for CNC... 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. Maximum step-pulse frequency is 100KHz, which is suitable for the servo or stepping motor. Have 0-10V output port, you can use software to control the spindle motor speed. DIY CNC Controller Card, USB 4-Axis Linkage Stepper Motor Motion Control Card, 100Khz Motion Controller Card Breakout Board for CNC Engraving CNC USB MACH3 100Khz Breakout Board 4 Axis Interface Drive Motion Controller Flying Carving Card Engraving Machine Motherboard Support for 4 Axis linkage, you can connect four stepper motor drives or servo drives; Support for connecting electronic handwheel;Handwheel interface: 2 * 5P row needle Maximum step-pulse frequency is 100KHz,which is suitable for the servo or stepping motor; Have 0-10V signal output,you can use mach3 software to control the spindle motor speed Support automatic probe tool , Support emergency input Status LED, indicate connection status on the board., Specifications: Size: 8 x 7., 7cm/3., 15 x 3., 03inch Weight: 160g Package Included: 1 x USB CNC Controller Card 1 x USB cable 1 x CD Support for limit switch Support for limit switch.