Description: _x000D_ This board as a driver expansion board, can be used for engraving machines and 3D printers. 3 axls stepper motor driver, compatible with micro-drive laser engraving machine, three-axls CNC engraving machine. 2A can be controlled within the two-phase four-wire stepper motor. It is quiet convenient to use. _x000D_ _x000D_ _x000D_ Features: _x000D_ 3 axls stepper motor driver, compatible with micro-drive laser engraving machine, three-axls CNC engraving machine. _x000D_ 2A can be controlled within the two-phase four-wire stepper motor. _x000D_ Released the digital IO interface, easy to connect to other modules, such as ENDSTOP. _x000D_ Released the I2C interface, you can connect to the LCD I2C or other I2C module. _x000D_ Power DC5V interface, 7.5-12V voltage input. It is compatible with GRBL, and works with nano. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ V4 Board Size: 7.2 x 5.9cm / 2.83 x 2.32" _x000D_ Nano Board Size: 4.3 x 1.8cm / 1.69 x 0.7" _x000D_ Driver Size: 2 x 1.5cm / 0.78 x 0.59" _x000D_ Heat Sink Size: 0.8 x 0.8cm / 0.31 x 0.31" _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 1 x CNC Shield V4.0 _x000D_ 1 x Nano 3.0 Board _x000D_ 3 x A4988 Drivers _x000D_ 1 x USB Cable _x000D_ 3 x Heat Sinks _x000D_ _x000D_ _x000D_ NOTE: WE DO NOT PROVIDE ANY TECHNICAL HELP.