Each motherboard, laptop or Original Equipment Manufacturer can add, remove and change features on the device controllers they implement on their systems. Therefore they provide customized drivers to support such changes. So we always recommend using the latest drivers provided directly by your motherboard or Original Equipment Manufacturer.
In this case you may look for a driver update for DELL systems using this URL:
http://www.dell.com/support/drivers/us/en/19/drivershome/showproductselector
Keep in mind that this driver may be listed by them as ME, Management Engine driver or HECI driver.