All drivers you can downloads here: Downloads for Intel® NUC Kit NUC7i7BNH . Instead of downloading each driver separately, you can download driver bundle at once (on the top, above the table). Unzip each driver using utility like 7-Zip http://www.7-zip.org/a/7z1604-x64.exe or similar. Some of the downloaded from Intel driver are packed in Zip archive and some self extracting archive with .exe extension. The last one can be also extracted with 7-Zip.
Hope this answer your question