# FusionAuth Connector

Learn more about the FusionAuth Connector.

> For the index of this section of the site, see [llms.txt](https://fusionauth.io/docs/llms.txt)

The FusionAuth Connector is the default Connector. This Connector accesses the FusionAuth user datastore to authenticate a user.

It is always present and cannot be deleted. Only the name of this Connector can be modified. It will always have the UUID of `e3306678-a53a-4964-9040-1c96f36dda72`.

This Connector applies to every domain, but can be applied first, last or in any other position, as configured in the Connector policy for a tenant.

Related

[APIs Authenticate a User API API documentation for the FusionAuth Authenticate a User API. user authentication](https://fusionauth.io/docs/apis/login/authenticate.md)
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## Other pages in Connectors

> For the full index of this section, see [Lifecycle](https://fusionauth.io/docs/llms-lifecycle.txt).

- [Generic Connector](https://fusionauth.io/docs/lifecycle/migrate-users/connectors/generic-connector.md): Log users in using FusionAuth and arbitrary data sources using an HTTP JSON API.
- [Connectors](https://fusionauth.io/docs/lifecycle/migrate-users/connectors.md): FusionAuth Connectors allow you to authenticate users against external data sources and optionally migrate them.
- [LDAP Connector](https://fusionauth.io/docs/lifecycle/migrate-users/connectors/ldap-connector.md): Learn more about connecting FusionAuth with an LDAP directory.