The module has 2 L9110 IC’s, so it can control 2 DC motors or 1 stepper motor.
The L9110 works with voltages from 2.5 to 12V and can give a continues current of 800mA. With a maximum peak current of 1.5-
The motors connect to the 2 terminals M1 & M2.
In the side of the male pins are the +MV (VCC) and GND pins. This is the input voltage for the L9110 chips.
The other 4 pins B1,A1,B2,A2 control the direction and speed of the motors. Pin B1 & A1 control motor A, and PinB2 & A2 control motor B.
To control motor A you set pin A-
Here is the sketch to test the module with 2 small DC motors: