Is there a way to connect my 2006 iMac to an external display?

Answer Yes, use the blue VGA port.

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How to Use a 27-Inch iMac as an External Display?

The 27-inch model of the iMac desktop computer can work as an external display for another computer. In order to use this feature, you will need to use a Mini DisplayPort cable. If the other comput... Read More »

24" 2005/2006 imac display issues?

Hello, Ask Apple here for free 1-800-MY-Apple ,and check out the sites for more informaton and… ... Read More »

Will blu ray playback on a 21.5 inch iMac work by plugging the one end of the hdmi cable from the blu ray player into the iMac's mini display port using an hdmi to mini displayport adaptor?

no the display port is an output so that would just connect two outputs together

How to Only Use External Monitors With the iMac?

The iMac computer includes a built-in DVI input to connect external displays. Most external displays however utilize a VGA video output and input signal. This means you will need to connect the two... Read More »