Users Guide

64 | Operating your monitor
Click OK to exit the Sound setting.
If the USB cable and the HDMI or DP cable are connected from monitor to the
computer, two speakers named DELL P2418HZm and P2418HZm respectively from
the monitor will show in the Sound setting interface. The difference between DELL
P2418HZm and P2418HZm is only different signal source. You can choose any one
to set default, the monitor speaker will be used as the default setting.