Change Atmega16U2 to a port

I tried making a HID Keyboard but i failed and now i want to make something else. But now i dont see my arduino uno r3 at the Ports but at the Atmel devices. How can i change that? (I also dont see my arduino in the arduino programming app.)

You will need to restore the original serial port firmware on ATmega16U2. There are instructions on line for how to do that.

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