Last of junk IT equipment (3)
I believe the answer is:
kit
'equipment' is the definition.
(kit is a kind of equipment)
'last of junk it' is the wordplay.
'last of' indicates one should take the final letters.
The final letter of 'junk' is 'k'.
'k'+'it'='KIT'
(Other definitions for kit that I've seen before include "Set of tools or clothes" , "Set - uniform - gear" , "tackle" , "Colours are visible on such" , "Set of articles or tools" .)