Partner’s assistance in securing computer peripheral (7)
I believe the answer is:
husband
'partner's' is the definition.
(husband is a kind of partner)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for husband that I've seen before include "Better half's other half?" , "Be thrifty with" , "Married man" , "manage thriftily" , "Wife's partner" .)