USB CNC Motion Controller Breakout Board designed for Mach3 software, featuring 4-axis linkage for stepper or servo motor drives. Maximum step-pulse frequency of 100kHz ensures precise motor control in engraving applications. Supports automatic probe tool, emergency input, and limit switches for enhanced safety and accuracy. Includes 0-10V output port for spindle motor speed regulation via Mach3 software. Equipped with 4 general-purpose inputs to connect devices like limit switches, e-stop switches, and probes. Provides 4 isolated relay drive outputs for controlling relays to manage spindle rotation, pumps, and accessories. Status LED indicates board connection status clearly. Requires external 24V DC power supply for USB isolation and system stability. Compatible with electronic hand wheels for manual operation. Specifications: Size approximately 8cm x 7.7cm (3.15in x 3.03in), weight 160g. Package includes: 1 x USB CNC Controller Card, 1 x USB Cable, 1 x CD. Note: Product type (new or old) may vary randomly; confirm item details before purchase.