Hi the FN or function key is used for certain keys on the keyboard, these are normaly keys with blue icons on them, also with white icons the Fn key controls the what is known as the Numlock..( the cluster of keys to the right of your standard keyboard) these are...keys :u,i,o j,k,l m also it can be used as a control key for some of the F keys, F1, F3,F4,F5,F6,F7,F8 these have things like volume adjust, or brightness adjust just to use this..press and hold the Fn key, then what ever other key you need, in the F keys, but just press and release it for the Numlock when needed....hope this helps
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