This is for UART version of Bafang mid drive Motors only. BBSHD and BBS02

Use this cable to connect to your computer to fully customize the motor and set parameters.

*Requires to download the free programming software of your choice

I recommend this:

https://penoff.me/2016/01/13/e-bike-conversion-software/

or this if you are familiar:

https://github.com/danielnilsson9/bbs-fw/blob/master/README.md

Do research before using the last saoftware/firmware.

I also recommend this guide for programming:

https://electricbike-blog.com/2015/06/26/a-hackers-guide-to-programming-the-bbs02/