A. This is the programming line specially used for the CAN protocol motor. It can address the issue of setting the wheel diameter and releasing the speed limit. When your M600 motor is limited by the factory to 32KM/H and you find the speed too slow, or when you change to a new frame and the wheel diameter size differs from the one set in the motor, causing the speed displayed on the display to be incorrect, this programming line can resolve your problems and bring you satisfaction. B. This programming line is simple to operate. The operation steps are as follows: 1. First, connect and power on the motor. 2. Connect the motor to the main line of the instrument. 3. Connect the interfaces at both ends of the programming cable to the motor and the display screen respectively. 4. Connect the USB plug of the programming cable to the USB interface of the computer or display screen. 5. The programming line indicator lights up to indicate a successful connection. C. Type: Speed Sendor. Fit: for mid motor. Colour: black. Material: plastic. D. Package Contents: 1 x Programing Cable. Only the above package content is included, and other products are not part of it. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1 - 3cm.