Unknown device - Latitude 5480, Optiplex 7050

Deploying Windows 7 Enterprise x64 to Latitude 5480 and Optiplex 7050.  Both have 6th gen processor.  Both show an unknown device in device manager.  I'm using the latest Dell driver packs for these models.  I've attempted to download the drivers individually and install them but still no luck.  Anyone know what the unknown device is?