Dell E1713S User Manual page 25

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 Display Settings.
NOTE:
Input Source (for Use the Input Source menu to select between different video signals that may be connected to your monitor.
E2013H/E2213H/E2313H
only)
Auto Select Select Auto Select to scan for available input signals.
VGA
Select VGA input when you are using the analog (VGA) connector. Push
DVI-D
Select DVI-D input when you are using the Digital (DVI) connector. Push
Color Settings Use the Color Settings menu adjust the monitor's color settings.
Auto Adjust option is only available when you are using an analog (VGA) connector.
to select the VGA input source.
to select the DVI input source.