DevPath.exe = set device path in advance, here it is set to %systemdrive%\Driverz 7z.exe = the program to extract 7zip archives Drvz.exe = looks for 7zip/cab archives and extracts them, then installs all devices, looking in the extracted files [GuiUnattended] DetachedProgram="%SystemRoot%\system32\DRVZ.EXE" =see above Note: DevPath.exe, 7z.exe, and Drvz.exe were copied to %systemroot%\system32 thanks to this: