Features: On-board DIP switch, you can easily adjust the drive segments. Terminal power connector for easy connection of drive power. Compatible with 12/24V drive scheme. Highly integrated expansion board, small size, stable performance. Suitable for 42 stepper motor drive, 3D printers and DIY. Specification: Logic voltage: 5V Input voltage: 12-30V Ports: Digital Interface: Direction, enable, speed Size: 42*42*10mm Fixed: 3mm Pitch: 35.56*35.56mm (1400*1400mil) Applicable module: For A4988 / DRV8825 Package list: 1 * Stepper Motor Driver Expansion Board Note: Please note the direction when installing the drive module, otherwise it will burn down the module. Package List 1Onboard DIP switch, you can easily adjust the drive segments. 2Terminal power connector for easy connection of drive power. 3Compatible with 12/24V drive scheme. 4Highly integrated expansion board, small size, stable performance. 5Suitable for 42 stepper motor drive, 3D printers and DIY.