“There is a small (1.25x1.25") door on the back of my Keurig K Duo Plus. There are some electrical harnesses inside. What is this?”

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• Thanks for your question. The K-Duo Plus Coffee Maker is manufactured with this connection should our engineers need to test the brewer for diagnostic purposes. We hope this information is helpful.

  Answered by Keurig Care 3 years ago

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