This message was posted on behalf of Intel Corporation
According to your computer configuration, you can only make the connection using straight-through cables; if there is another device in between your television and the integrated graphics controller, it will interfere with the onboard graphics controller's ability to properly detect the presence of your TV or Monitor.
You can check the Frequently Asked Questions for Multiple Displays:
Dell® 3020 micro – document:
You can get more information about configuration 3 Displays in this site: