Crossword Genius

Partner’s assistance in securing computer peripheral (7)

Ross

I believe the answer is:

husband

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'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" .)

I've seen this clue in The Times.
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