Websites from OEM's like Dell do not necessarily proivde the latest drivers from the manufacturer of the used chips. See if the one provided by XP is newer than what Dell provides and if the Intel website has a newer version for download.
You mention install the latest version from Intel.
But Intel driver verification utility mentions that its customized version by your manufacturer. Running the latest version instead of the customized version by manufacturer may have technical probs on the system. So download & install the latest from manufacturer site.
So I guess I should install whatever latest version manufacturer site has, wot say?