An output device is something that shows or presents information from a computer to the user. It could be a screen, a printer, or even speakers that produce sound. Full definition
All 3.5 mm audio output devices will be compatible with the headset. (gamerassaultweekly.com)
Just click the arrow next to current audio output in use to expand and see other output devices available. (blogs.windows.com)
You can click or tap the speaker icon and switch between multiple output devices — like speakers and headphones — if you have more than one connected. (howtogeek.com)