When you connect the controller to your dock, it should be immediately be recognized by your Nintendo Switch and show up in the Controller Configuration Settings. If this is not the case, please check if the controller is getting power. You can do this by pressing the function button next to the right analog stick. If you press and hold it for 3 seconds, the LED will now light up. If the LED doesn't light up, check if the cable is properly inserted into the controller and your dock. Also, try connecting the cable to the other USB-port on your Switch-dock.
Sometimes, controllers need to be paired for first use with each console and paired again when you were using it on a different Switch.
How to enable Pro Controller Wired Communication:
- Plug in your Pro Controller to the Switch TV dock.
- Select System from the main menu.
- Select Controllers and Sensors from the sidebar.
- Select Pro Controller Wired Communication.
As long as you are using the Pro Controller Wired Communication mode, the Pro Controller's NFC capability will be turned off. If you want to use Amiibo, you'll need to either unplug your Pro Controller, so it reverts to a wireless connection or repeats the steps above to turn off Pro Controller Wired Communication.
Now, if needed, from the main menu:
- Select "Controllers"
- Select "Pairing New Controllers"
- Complete pairing.
If it's already there, go to "Find Controllers".