Also after I installed ethernet drivers with option "Intel property pages for device manager" I expected that some customized pages will exist in ethernet adapter properties. But there is no any new or customized page, just usual properties as before installation.
We always recommend getting the drivers from the computer manufacturer as they usually customize and test them with your system model.
There is a chance your system may have switchable graphics (Intel® HD Graphics 4000 + third party graphics controller) and if that is the case only the custom drivers from the manufacturer will work properly.
I hope this answers your question.