Also available as :
SM-N910F for Europe
SM-N910K/SM-N910L/SM-N910S for Korea
SM-N910C - Asia, Europe, South America
SM-N910FD - United Arab Emirates
SM-N910FQ - Turkey
SM-N910H - Asia-Pacific
SM-N910G - Singapore, India, Australia
SM-N910U - Hong Kong, Taiwan, Australia, New Zealand, Chile
SM-N910W8 - North America
Prerequestis :
-Before doing anything you have to backup your Samsung Galaxy Note 4 Data See this guide here
1-You need to enable USB debugging mode which is deactivated by default. (you can skip it ) 2-Your Note 4 should have 70-80% charge remaining.
3-USB Cable to connect your phone with your PC .
Step by step root for Note 4 :
You can root you Note 4 With CF Auto root Here
Or you can use kingo root HERE