Setting up some software support for consumer (4)
I believe the answer is:
user
'consumer' is the definition.
(user is a kind of consumer)
'setting up some software support' is the wordplay.
'setting up' says the letters should be written in reverse.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'resu' can be found hidden inside 'software support'.
'resu' in reverse letter order is 'USER'.
'for' is the link.
(Other definitions for user that I've seen before include "Someone who exploits another" , "With 1a [NEW] he'll need different login" , "One who exploits, to be sure" , "Operator (of something)" , "One who employs" .)