> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/support-denmark/t650-2-delt/vejledninger/sadan-finder-du-serienummeret.md).

# Sådan finder du serienummeret

Find serienumrene på din T650 2-delt — T650C'en i softwaren eller på etiketten, og P400 på etiketten.

{% hint style="info" %}
**Brug dette, når** du skal finde serienummeret på din T650C eller P400 — for eksempel når du kontakter Verifone Support.
{% endhint %}

Hver enhed har sit eget serienummer. Hvis Support beder om "serienummeret", mener de som regel **T650C**.

{% tabs %}
{% tab title="T650C — i softwaren" %}

1. På T650C skal du trykke på **de tre vandrette linjer** i øverste venstre hjørne af skærmen.
2. Vælg **Om**.
3. Serienummeret er angivet som **Hardwareenheds-ID**, i dette format: **XXX-XXX-XXX**.
   {% endtab %}

{% tab title="T650C — på etiketten" %}
Serienummeret er også trykt på **etiketten på T650C**, ved siden af en stregkode, i dette format: **S/N XXX-XXX-XXX**.
{% endtab %}

{% tab title="P400 — på etiketten" %}

1. Vend forsigtigt **P400** om, så du kan se undersiden.
2. **Serienummeret** er trykt på etiketten på **undersiden** af P400.
   {% endtab %}
   {% endtabs %}

<details>

<summary>Nøgleord</summary>

Også kaldet: serienummer, S/N, hardwareenheds-id, find serienummer, lokaliser serienummer. Søgetermer: serienummer, S/N, hardwareenheds-id, om, klistermærke, stregkode, T650C, P400.

</details>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.verifone.com/support-denmark/t650-2-delt/vejledninger/sadan-finder-du-serienummeret.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
