Exporting the third party device drivers from your running windows installation.
Export-WindowsDriver -online -Destination D:\path\folder
Exporting the third party device drivers from a windows image
Export-WindowsDriver -Path E:\ -Destination D:\path\folder
Add all device drivers from folder tree to a windows image
Add-WindowsDriver -Path "E:\offline" -Driver "D:\drivers" -Recurse
Add an unsigned device driver to a windows image
Add-WindowsDriver -Path "E:\offline" -Driver "D:\driver.inf" -ForceUnsigned