Dell E1916H User Manual page 34

Auto Select
VGA
DP
Color
34 Operating the Monitor
Select Auto Select to scan for available input signals.
Select VGA input when you are using the analog (VGA)
connector. Push
Select DP input when you are using the DP connector. Push
to select the DP input source.
Use the Color menu to adjust the monitor's color settings.
to select the VGA input source.