Dell S2240L Monitor - Manual (Page 26)

Auto Adjustment allows the monitor to self-adjust to the incoming video signal. After using Auto Adjustment, you can further tune your
monitor by using the Pixel Clock (Coarse) and Phase (Fine) controls under Image Settings.
NOTE: Auto Adjust does not occur if you press the button while there are no active video input signals or attached cables.
INPUT SOURCE Use the Input Source menu to select between different video signals that may be connected to your monitor.
Auto Select Select Auto Select to scan for available input signals.
VGA
Select VGA input when you are using the analog (VGA) connector. Push to select the VGA input source.
HDMI
Select HDMI input when you are using the Digital (HDMI) connector. Push to select the HDMI input source.
COLOR SETTINGS Use the Color Settings menu to adjust the monitor's color settings.