# PUT: Modify a Router Output
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Modify the attributes of the specified output on the specified router. Modify the attributes if a cable from the router output moves to a different SDI card input.

## HTTP Request and Response
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### Request URL
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```
PUT http://<Conductor IP address>/routers/<ID of router>/outputs/<ID of output>
```

### Call Header
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+ Accept: Set to `application/xml`
+ Content-Type: Set to `application/xml`

If you are implementing user authentication, you must also include three authorization headers; see [Header Content for User Authentication](header-content-user.md).

### Request Body
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The body contains only the elements to change. For available elements, see [POST: Create a Router](set-up-routers-create.md).

## Example
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This request changes the router output with the ID 4. This input belongs to the router with the ID 2. It changes its device\_id to 3 to indicate that the connection represented by this router output is actually to the SDI input that has the ID 3.

```
PUT http://198.51.100.0/routers/2/outputs/4
------------------------------------------
Content-type:application/vnd.elemental+xml;version=3.3.0
Accept:application/xml
------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<output>
  <device_ID>3</device_id>
</output>
```