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Does OS X support two monitors?
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Mac Enthusiast
Join Date: Aug 2006
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My fiancee has a MacBook Pro and I know it has a video out to hook up an external monitor but if you hook up an external monitor can you view both that and the laptop's LCD at the same time.
What I mean is not for the exact same items but as an example she does stock market analysis for a living. She has many screens open at a time monitoring different things in the market and wondered if there's any way she can use a monitor for that use, to have different displays on each. Of course I'm not sure how you'd control it with the mouse/keyboard but is there anything like this that OS X does?
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Posting Junkie
Join Date: Nov 2000
Location: in front of my Mac
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Yes, you can do that.
Connect the external Monitor. Go to System Preferences > Displays > Arrangement and make sure "Mirror Displays" is not selected. The panel graphically shows you where the two displays 'meet' and on which screen the menu bar is displayed. You can move the screens and the mneu bar around until you have the arrangement you want. You can then drag windows from one screen to the other.
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Professional Poster
Join Date: Oct 1999
Location: :ИOITAↃO⅃
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Macs have supported dual monitors since System 4 in 1987 
Actually, the 1987 Mac II supported up to six graphics cards, so you could drive six monitors with it.
These days every Mac has either a built-in monitor + a DVI port for an external monitor, or two DVI ports.
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Mac Elite
Join Date: Nov 2001
Location: Dark Side of the Moon
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You can also use the F7 key (it's F7 on my Macbook, look for the one with two boxes) to switch between video mirroring and video spanning.
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Forum Regular
Join Date: May 2007
Location: Massachusetts
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No special icons on my F7 key. I have a feeling that's a notebook-only feature, so you can either use it closed (mirroring) or open in conjunction with another monitor (spanning).
Any other way to do mirroring on an iMac?
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Posting Junkie
Join Date: Nov 2000
Location: in front of my Mac
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Originally Posted by shinykaro 
No special icons on my F7 key. I have a feeling that's a notebook-only feature, so you can either use it closed (mirroring) or open in conjunction with another monitor (spanning).
Mirroring is not closed-lid mode. Mirroring means both displays are on and showing the same picture.
Any other way to do mirroring on an iMac?
System Preferences > Displays > Arrangement
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Forum Regular
Join Date: May 2007
Location: Massachusetts
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