Feature: 1. Application: This is a stepping motor drive control board, which suitable for A4988 and DRV8825. 2. Guaranteed Performance: The stepping motor drive control board with high quality components is selected, and the performance is guaranteed. 3. Replace Damaged Control Board: The stepper motor drive control board can replace the damaged control board very well. 4. Wide Application: This drive control board is suitable for stepper motor drives and 3D printers. 5. Basic Description: The jumpers are all set to ON DP position, which means 16 subdivision (4988) or 32 subdivision (8825). Specification: Item Type: Stepper Motor Control Expansion Board Description: 1. Applicable for A4988, DRV8825, pay attention to the direction when inserting, otherwise the drive may be burnt. 2. The position where the jumpers are all set to ON DP indicates 16 subdivision (4988) or 32 subdivision (8825). 3. Jm connected to the motor. 4. Jv connects 5V and 12V-24V power supply 5. E, S, D, G of Jc corresponds to the Enable, Step, Dir, Gnd, drive signal output on the connection respectively. Package List: 1 x Drive Control Board Note: Pay attention to the direction when installing, otherwise may burn the driver and even the motherboard