PC peripheral used in the days of dialup connections (5)

I believe the answer is:

modem

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'pc peripheral' is the definition.
(I've seen this in another clue)

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(Other definitions for modem that I've seen before include "Digital-analogue converter" , "Device for connecting two computers" , "PC/telephone link" , "Internet connection" , "Device used with computer" .)

I've seen this clue in The Times.

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