And this inf-file determines which features, branding are installed.
For example: My Lenovo Notebook has the following ID's
10EC = Realtek, 0283 = assigned for Lenovo and has the Dolby suport, so if the driver package comes with the Dolby Installer, it will be installed in the control panel
My HP notebook has the following ID's
VEN_10EC&DEV_0290&SUBSYS_103C8092. DEV 0290 enables the B&O Play Soundmanager.