Serial No., Service Tag, Product Key - what's the difference? - General Hardware - Desktop - Dell Community

Serial No., Service Tag, Product Key - what's the difference?

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Serial No., Service Tag, Product Key - what's the difference?

  • Are all of them unique to my computer or are some of them more general? I can only find a serial no. on my old Dell 166.... on my newest I see only a product key.. the ones in the middle seem to have the service tag and the product key. Which should I use to identify a computer contacting Dell?
  • The product key should be for reinstalling Windows.  If the middle numbers in the product key are the same as your S/N that's probably just a coincidence.

    BTW, record that product key in a safe place in case the tag gets obliterated.  If you ever have to reinstall Windows you will need it.

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