Samsung S24A40 Series User Manual page 29

If the USB cable and the HDMI or DP cable are connected from monitor to the computer, two speakers
named LS24A40xV and Speakers (LS24A40xV) respectively from the monitor will show in the Sound
setting interface. The difference between LS24A40xV and Speakers (LS24A40xV) is only different signal
source. You can choose either one to set as the default speaker for monitor.
29