Dell S2415H User Manual page 32

Color Use the Color menu to adjust the color setting mode.
Input Color Allows you to set the video input mode to:
Format
RGB: Select this option if your monitor is connected to a computer (or
DVD player) using the HDMI cable; or MHL devices using the MHL cable.
YPbPr: Select this option if your monitor is connected to a DVD player
by YPbPr using HDMI cable; or MHL devices by YPbPr using the MHL
cable.
Or if the DVD (or MHL devices) color output setting is not RGB.
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| Operating the Monitor