Fangrui Product Details This Is The Programming Line Specially Used For The Bafang Can Protocol Motor. It Can Solve The Problem Of Setting The Wheel Diameter And Releasing The Speed Limit. When Your M600 Motor Is Limited By The Factory To 32km/h, Do You Feel That The Speed Is Too Slow To Satisfy You, When You Change To A New Frame, Because The Size Of The Wheel Diameter And The Size Set In The Motor Are Different, And The Speed Displayed On The Display Is Wrong, It Feels Very Disappointing. This Programming Line Can Solve Your Troubles And Make You Happy Stand Up. This Programming Line Is Simple And Easy To Operate. Operation Introduction: 1.first, The Motor Is Connected And Powered On 2.the Motor Is Connected To The Main Line Of The Instrument 3.the Interfaces At Both Ends Of The Programming Cable Are Connected To The Motor And The Display Screen Respectively 4.the Usb Plug Of The Programming Cable Is Connected To The Usb Interface Of The Computer Or Display Screen 5.the Programming Line Indicator Lights Up To Indica