How to Have Multiple Monitors With a iMac

Your iMac comes loaded with accessibility features and display options that allow you to customize your experience and ensure comfort and productivity. Multiple monitors enlarge your workspace. Program windows' sizes increase, icons expand, Web pages extend and multitasking becomes easier. With external displays you can organize your projects by limiting certain programs to a specific monitor, while arranging other applications on another monitor.

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VGA Monitor to iMac

Step

Connect the VGA cable into the VGA slot of the external monitor. Tighten the knobs on the cable to secure the connector to the monitor.

Step

Attach the other end of the cable to the VGA slot of the mini DisplayPort to VGA adapter. Tighten the knobs on the cable to secure it to the mini DisplayPort adapter.

Step

Plug the mini DisplayPort adapter into the mini DisplayPort of your iMac.

Step

Connect the external monitor to its power source.

DVI Monitor to iMac

Step

Connect the DVI cable into the DVI slot of the external monitor. Tighten the knobs on the cable to secure the connector to the monitor.

Step

Attach the other end of the cable to the DVI slot of the mini DisplayPort to DVI adapter. Tighten the knobs on the cable to secure it to the mini DisplayPort adapter.

Step

Plug the mini DisplayPort adapter into the mini DisplayPort of your iMac.

Step

Connect the external monitor to a power source.

HDMI Monitor to iMac

Step

Connect the HDMI cable into the HDMI slot of the external monitor. Tighten the knobs on the cable to secure the connector to the monitor.

Step

Attach the other end of the cable to the HDMI slot of the mini DisplayPort to DVI adapter.

Step

Plug the mini DisplayPort adapter into the mini DisplayPort of your iMac.

Step

Connect the external monitor to a power source.

Mini DisplayPort to iMac

Step

Insert one end of the mini DisplayPort cable into the mini DisplayPort of your external monitor.

Step

Plug the other end of the cable into your iMac's mini DisplayPort slot.

Step

Connect the external monitor to a power source.

Configure Displays

Step

Click the "Apple" menu icon on your iMac desktop. Select "System Preferences" from the drop-down menu.

Step

Select the "Displays" button.

Step

Click the "Detect Displays" button in the bottom-right of the dialogue window. This action will extend your iMac desktop to your external monitor.