Dell S2421H User Manual page 49

If either HDMI1, HDMI2 input is selected and the corresponding cable is not connected,
a floating dialog box as shown below appears.
See Troubleshooting
Dell 24/27 Monitor
No HDMI1 Cable
The display will go into Standby mode in 4 minutes.
www.dell.com/S2421H
www.dell.com/S2721H
Dell 24/27 Monitor
No HDMI2 Cable
The display will go into Standby mode in 4 minutes.
www.dell.com/S2421H
www.dell.com/S2721H
for more information.
S2421H/S2721H
or
S2421H/S2721H
Operating the monitor | 49