ITEM NAME:L9110S PWM H-Bridge Stepper Motor Driver Dual DC Controller Mod JR.Motor drive of double L9110S chip. PCB Board Size: Approx. OA1 OB1 connect 2pcs pins of DC Motor, directionless. Power indicator light is on if you connect VCC and GND. OA2 OB2 connect2pcs pins of DC Motor, directionless.