Features: Support FOC-vector control torque speed position three-loop control Support serial port direct control Read position and status Set system parameters 8 high-quality MOS tubes are used to form a double H-bridge drive to make the motor control smoother Using on-board industrial-grade high-precision 16384-line magnetic encoder enables precise positioning at each step Support 42 stepper motors, support 1-256 arbitrary subdivisions, odd subdivisions are also possible Specifications: Item: 3D Printer Motor Driver Kit Motherboard model: MKS SERVO42C V1.0 Microprocessor: High-performance 32-bit ARM processor Drive: 8 MOS tubes form a double H-bridge drive Input voltage: 7V-28V Working current: 0-3000mA Subdivision support: 1-256 arbitrary subdivisions Size: approx 39mmx39mmx1.6mm/1.54x1.54x0.06in Package Includes: 1 PC x MKS SERVO42C V1.0 Motor Driver note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment