1. MA MB MC phase line output connection motor 2. 5V GND motherboard comes with 5V power supply (current does not exceed 30MA) 3. VCC GND motor main power supply (external DC power supply) 4. SC speed pulse signal output 5. positive and negative reversing control interface (also can be connected to the external switch) VR speed control signal input (onboard with potentiometer speed control can also be connected to 0-5V analog simulation PWM duty cycle to support dual signal input speed regulation). Ha Hb Hc +5V GND Hall signal Power input, generally with Hall's motor has five corresponding lines. Full patch process Stable performance with positive/reverse function. Motherboard specifications: Product Name:400W Brushless Hall DC Motor Driver Model Number:ZS-X11D1 Operating voltage:6-60V Maximum current:rated 16A peak 20A power:400W Overcurrent protection:Yes Product size:length 63MM x width 45MM x height 31MM Weight:about73g Colour:As Shown Material:Metal Package Contents: 1 x Motor Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.