Is it possible to switch between earphones and built-in monitor speakers? - Super User
How to easily swap between headphones and speakers in Windows 10 | PC Gamer
How to Switch Sound Output Between Headphones and Speakers on Windows 10
How can I switch between my headphones and speakers with unplugging the jack? : r/pop_os
MABOTO LINEPAUDIO Audio Switcher RCA 2 in 1 Out / 1 in 2 Out A/B Switch Stereo Audio Splitter Box with No Distortion RCA Jack for Switching Between Computer Speakers and Headphones - Walmart.com
Frequent question: How do I automatically switch from speakers to headphones in Windows 10?