Dragonboard 410c USB AndroidDebugBridge/interface

I am following Coursera IoT and using windows7.
Using the document: DragonBoard™ 410c based on Qualcomm® Snapdragon™ 410 processor
Software Build and Installation Guide, Linux Android. Page 12 step 8 says Obtain the latest version of the Qualcomm Composite USB driver from Documents and Downloads. I cant seem to find it can you please provide a link.

After step 8 on page 12 there is a lot of code. What am I supposed to do with that bunch of code?
Please provide a clear way to create this bridge/interface.
Thank you,

Hi please refer to


Also this link.