Lenovo ThinkCentre Tiny-In-One 22 Gen 4 21.5" 16:9 Video Conferencing FHD IPS Monitor - Manual (Page 23)

Chapter 2.
2-4
Speakers
Your monitor has integrated 2 speakers which can support audio transmitted over the DP video
input as well as USB audio. When you select the DP mode, the USB3.0 cable is required to
connect to the system. When you select the AIO mode, the USB3.0 cable is not needed.
Speaker volume is adjusted using controls on the front of the monitor .
Note: When a Headphone or Speaker connected to Tiny audio port, the monitor speaker would
not mute until the audio playback device is switched.