HT201994: iMac (Late 2009) and iMac (Mid 2010): External features, ports, and connectors
Learn about iMac (Late 2009) and iMac (Mid 2010): External features, ports, and connectors
Q: how do i add a second monitor to a late 2009 iMac 27"
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May 21, 2013 8:33 PMby rkaufmann87,Hundreds of thousands of done it, simply buy the correct video adapter cable, plug it in to either your VGR or DVI and turn it on. To get to the correct System Prefrence go to System Preferences - Display. The correct adapter cable will be either:
http://store.apple.com/us/product/MB572Z/B/mini-displayport-to-vga-adaptor?fnode =53
or
http://store.apple.com/us/product/MB570Z/B/mini-displayport-to-dvi-adaptor?fnode =53
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May 21, 2013 8:44 PMby den.thed,Depends on the monitor, many support more than one connection.
Also note that: VGA is analog, DVI is digital and HDMI is full HDMI technology.
For a VGA supported monitor, you will need a > Mini DisplayPort to VGA Adaptor and a VGA cable.
For a DVI supported monitor under 24", you will need a > Mini DisplayPort to DVI Adaptor and a DVI cable.
For a DVI supported monitor over 24" you will need a > Mini DisplayPort to Dual-Link DVI Adapter and a DVI cable.
For a HDMI supported monitor, you will need a > Belkin Mini DisplayPort to HDMI Adapter and a HDMI cable.
