One of the reasons you'd prefer the Steam Deck over consoles like the PlayStation 5, the latest Xbox, or even Valve's own Steam Machine is the portability. Whether you're using the OLED or non-OLED variant, you can connect your Steam Deck to a TV in a variety of ways. You can get an official Dock for the Steam Deck from Valve for $80, but there are plenty of cheaper Steam Deck alternatives out there as well. Select the correct HDMI source on your TV, and your Steam Deck will automatically adjust its display settings. From there, you can change the resolution by clicking through the External Display Scaling options while the Deck is connected to an external display.