Dell P2214H Monitor - Manual (Page 33)

Input Source Use the Input Source menu to select between the different video
signals that may be connected to your monitor.
Auto Select Press
sources. to select Auto Select, the monitor scans for available input
VGA Select the VGA input when you are using the analog (VGA) connector.
Press
to select the VGA input source.
DVI-D Select the DVI-D input when you are using the Digital (DVI) connector.
Press
to select the DVI input source.
DisplayPort Select the DisplayPort input when you are using the DisplayPort (DP)
connector. Press
to select the DisplayPort input source.
Operating the Monitor | 33