NOTE: Do not connect the blue VGA , the White DVI and the black DisplayPort cables to the computer at the same time. All monitors are shipped with the VGA (blue) cable attached by default.

2.Connect the white (digital DVI-D) or the blue (analog VGA) or the black (DisplayPort) display connector cable to the corresponding video port on the back of your computer. Do not use three cables on the same computer. Use all the cables only when they are connected to three different computers with appropriate video systems.

Connecting the white DVI cable

Connecting the blue VGA cable

Connecting the black DisplayPort cable

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Image 31
Dell P221-OH appendix