Welcome to our store! This driver can simultaneously operate three 2.5A stepper motors, making it easy to expand to a 5th axis when you need 5-axis machining. The high-speed optocoupler DCDC is fully isolated, truly protecting your computer. Features a spindle relay output, making it easy to use Mach3 and other software to control spindle start and stop. The half-current control function effectively reduces current to the lowest level when the motor stops. Includes a fan interface, allowing you to add fans as needed. Key Features: Operates three 2.5A stepper motors simultaneously. High-speed optocoupler DCDC provides full isolation. Spindle relay output for easy spindle control. Half-current control minimizes motor current when stopped. Fan interface for optional fan addition. Four channels with adjustable current (0.8-3.5A peak) for two-phase bipolar stepper motor control. Standard parallel interface supports software like MACH2, KCAM4, etc. Four-way interface with plug-and-pull design for easy limit switch connection. Supports four working modes: mixed mode, fast mode, slow mode, and normal mode. Supports four subdivisions: 1, 1/2, 1/4, 1/16. 24-36V single power input uses a switching power supply chip as a 5V power supply, ensuring stability and low heat generation. Specification: Model: TB6560 Type: 3-Axis Working Mode: Mixed mode, fast mode, slow mode, and normal mode Weight: 611g / 21.6oz Package List: 1 * Stepper Motor Driver 1 * Parallel Cable Note: The actual product color may differ from the photo due to lighting. There may be a slight deviation in the measurement of the product. If you encounter any product issues after receiving the goods, such as damage or incorrect quantity, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.