"preconnected" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pre",
        "3": "connected"
      },
      "expansion": "pre- + connected",
      "name": "prefix"
    }
  ],
  "etymology_text": "From pre- + connected.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "preconnected (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with pre-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2015 June 8, Felip Miralles et al., “Brain Computer Interface on Track to Home”, in The Scientific World Journal, volume 2015, →DOI",
          "text": "The 34 electrodes including reference channel and ground are preconnected to the amplifier using a preconfigured set of electrode positions.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "connected prior to some other operation"
      ],
      "id": "en-preconnected-en-adj-WmzsvBMv",
      "links": [
        [
          "connected",
          "connected"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "preconnected"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pre",
        "3": "connected"
      },
      "expansion": "pre- + connected",
      "name": "prefix"
    }
  ],
  "etymology_text": "From pre- + connected.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "preconnected (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with pre-",
        "English terms with quotations",
        "English uncomparable adjectives"
      ],
      "examples": [
        {
          "ref": "2015 June 8, Felip Miralles et al., “Brain Computer Interface on Track to Home”, in The Scientific World Journal, volume 2015, →DOI",
          "text": "The 34 electrodes including reference channel and ground are preconnected to the amplifier using a preconfigured set of electrode positions.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "connected prior to some other operation"
      ],
      "links": [
        [
          "connected",
          "connected"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "preconnected"
}