Dell 720H2C appendix Connecting Two or More Monitors, Connecting a TV

To connect a monitor with a DVI connector, use the (white) DVI port on the primary graphics card.

To connect a monitor with a VGA connector, use the (blue) VGA port on the primary graphics card.

Connecting Two or More Monitors

CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTE: In order to connect and use two or more monitors in a dual graphics card configuration, multi-GPU technology must be disabled. To disable multi- GPU, see Changing the Display Settings to Support Two or More Monitors.

NOTE: Depending on the options selected when you purchased your computer, your video card may have two DVI ports, or one DVI and one VGA port.

1.Save and close all open files and exit all open programs.

2.Shut down the operating system:

•In Windows XP, click Start→ Turn Off Computer→ Turn off.

•In Windows Vista, click Start , click the arrow in the lower-right corner of the Start menu as shown below, and then click Shut Down.

The computer turns off after the operating system shutdown process is complete.

3.Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your operating system, press and hold the power button for about 4 seconds to turn them off.

4.Connect two or more monitors to the appropriate DVI or VGA ports on the back of the computer.

NOTE: In order to connect a monitor with a VGA connector to the DVI port on the back of your computer, a DVI-to-VGA adapter is required.

To connect two or more monitors directly to the DVI or VGA ports on your computer, see Connecting a Monitor (Without an Adapter).

To connect the VGA connectors of one or more monitors to the DVI port(s) on your computer, see Connecting a Monitor (With an Adapter).

5. Change the display settings to support multiple monitors (see Changing the Display Settings to Support Two or More Monitors).

Connecting a TV

CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTE: If you are connecting a TV to your computer, you may connect only one monitor (VGA or DVI) in addition to the TV.

NOTE: See the documentation that came with your TV to ensure that you properly configure and connect the TV.

To connect a TV to your computer, an S-video cable is required. If you do not have an S-video cable, you may purchase one at most consumer electronics stores. An S-video cable is not included with your computer.

1.Save and close all open files and exit all open programs.

2.Shut down the operating system:

•In Windows XP, click Start→ Turn Off Computer→ Turn off.

•In Windows Vista, click Start , click the arrow in the lower-right corner of the Start menu as shown below, and then click Shut Down.

The computer turns off after the operating system shutdown process is complete.

3.Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your operating system, press and hold the power button for about 4 seconds to turn them off.