Adding a 3rd monitor to a MacPro

Discussion in 'Mac Pro' started by jerms9500, Jun 22, 2011.

  1. jerms9500 macrumors newbie

    Jun 22, 2011
    I have a Mac Pro Dual-Core Intel Xeon 2.66 GHz and am looking to get a 3rd monitor up and running. I installed a 2nd video card, a NVIDIA GeForce 7300 GT to hook up the 3rd monitor. It's currently connected via a DVI to VGA adapter.

    The Mac says it recognizes that there is a 3rd monitor hooked up and the 3rd monitor turns on with the mac purple light burst and stars background image showing. But the mouse cursor won't move over onto the 3rd monitor nor can I drag any open windows over to it. Is there a fix for this or any troubleshooting I can do?

    Or do I need to use a Mini DisplayPort + USB to Dual-Link DVI Adapter as well?

    This seemed like as easy, simple task to do at first. Thought installing a 2nd video card would do the trick, so any advice would be helpful. Thanks.
  2. IceMacMac macrumors 6502

    Jun 6, 2010
    I'm sure you've already thought of this....

    But take a look at your display preferences and make sure to drag the little monitor icons to match the physical location of the displays.

    You are correct...installing a 2nd video card should be utterly easy and intuitive. I've done it on many Macs.
  3. jerms9500 thread starter macrumors newbie

    Jun 22, 2011
    Thank you very much, the arrangement tab did the trick. I never even looked there! A big "DUH" on my part. Easy fix...thanks again.

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