**Revised Description:** Optocoupler Isolation with Offline Recognition: Features offline recognition, allowing simultaneous connection of an offline module and computer. Optocoupler isolation in the spindle drive reduces heat, ensuring stable and safe speed control. Upgraded USB Interface: Plug-in design enhances durability, minimizing detachment risks during transport or use. Wide Compatibility: Works with GRBL Controller and UniversalGcodeSender software, supporting 12V stepper motors (max 2A). Suitable for 42/57 stepper motors. Spindle & Laser Control: Supports 400W DC spindle motors and lasers, offering full control for three axes, spindle, and laser head. User-Friendly: Includes a 5.5-2.5mm DC power interface and USB cable. Compatible with Windows XP, 7, 8, 10. **Specifications:** - Type: CNC Engraving Control Board - Connection: USB (CH340) - Main Chip: 328P - Spindle Drive: MOSFET (24V, ��10A recommended) - Stepper Motor: 12V, ��2A (42/57 compatible) - Laser Engraving: Supported (12V, ��5A) - Power: 5.5-2.5mm DC - Color: Black - Material: Plastic **Package Includes:** 1 x Control Board 1 x USB Cable *Note: Slight color variations may occur due to lighting/screen differences. Size tolerance: ��1-3cm.* Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia