# Step D: Complete the output mappings
<a name="sdi-rou-output"></a>

Map each router output to the SDI input on the Elemental Live hardware unit that you plan to use. This mapping must reflect the actual cabling from the output side of the router to the input side of the SDI card.

In the following example, the four inputs on the SDI card at the top have a path into the router. The one and only input on the second card has a path to the router. And two of the four inputs on the bottom SDI card have a path to the router.

![Three SDI cards with inputs routing to a central router, showing varying path connections.](http://docs.aws.amazon.com/elemental-live/latest/configguide/images/sdi-diagram-shared-png.png)


**To map the outputs**

1. On the Elemental Live web interface, make sure you're on the **Edit Router** screen, as described in [Step C: Complete the input mappings](sdi-rou-input.md). Choose **Map Outputs**. 

1. Complete the first line as follows:
   + **Output**: Select an output that is one of the cabled router outputs that you plan to use.
   + **Connected to**: Select the card and node that the router output is connected to. 
**Warning**  
Do not select any of the quad-link inputs. Elemental Live does not currently support 4K SDI input via a router.

1. Choose **Add** (**\+** icon).

1. Choose **Map Outputs** again and create a line for each router output that is cabled.