“Is this fan compatible with a Dell Inspiron 3646 model?”

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• As long as the old fan is 120 mm in size, then yes it'll work fine. Don't be confused by the 4-pin plug - it'll fit on the 3-pin motherboard header as the molded "guide ridge" forces proper orientation on 3-pin motherboard fan headers.

  Answered by Promptjock 8 years ago

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• This 120 mm fan it will fit in a 120 mm fan:-o...

  Answered by Mojman 9 years ago

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