Spouses switch USB and stereo inputs (8)

I believe the answer is:

husbands

I'm a little stuck... Click here to teach me more about this clue!

'spouses' is the definition.
(husband is a kind of spouse)

'switch usb and stereo inputs' is the wordplay.
'HUSBANDS' is hidden in amongst the letters.
But, I am uncertain how this is indicated.

Can you help me to learn more?

(Other definitions for husbands that I've seen before include "Married men" , "They're married" , "mates" , "Carefully manages" .)

I've seen this clue in the Sydney Morning Herald.

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