Connect for 27" Imac as external monitor

Hello All!
I'm planning to use my 27" iMac screen as an additional montor to the new MacPro I'm getting very soon.
What I'd like to know is do I need to buy an over priced, specially made mini display port cable or can I simple use a mini display port adapter at each end of a length of VGA cable.
Hope that makes sense.
Many thanks

mini-DisplayPort signaling is digital. VGA is analog. The m-DP to VGA adapter you mention is uni-directional; m-DP to VGA, not VGA to m-DP. You need a m-DP to m-DP cable to accomplish your goal.
They do not have to be that expensive bro!
http://www.monoprice.com/products/subdepartment.asp?cid=102&cp_id=10246&csid=1024602
Dah•veed

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1) Excuse the ignorant question but how would you connect the T410s to an external monitor? The T410s has a DisplayPort port, but what if the monitor does not have a DisplayPort port but an HDMI port?
2) Which leads into my second question. How would I connect the T410s to two external monitors? I guess whatever the answer is to the above question, but connect some kind of a splitter coming out of the T410s DisplayPort port?
3) And lastly, take a look at this link...
http://shop.lenovo.com/SEUILibrary/controller/e/web/LenovoPortal/en_US/catalog.workflow:category.details?current-catalog-id=12F0696583E04D86B9B79B0FEC01C087&current-category-id=19C791A03AF24034A0011B825513BCED&tabname=Gallery
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Solved!
Go to Solution.

Thank you, lead_org. You've been very helpful. Last 2 questions hopefully.
1) Regarding the use of DisplayPort on the Mini Dock Plus, since DisplayPort transmits audio as well as video (unlike the old style VGA which only sent video), if I connected the Mini Dock Plus to the HDMI port of my monitor (using a DP-to-HDMI adapter of course) would I lose audio out coming out of the green miniplug port on the mini dock, since the system might assume I want all audio to go through the DisplayPort cable? I have seperate external speakers I want to use and not the ones on the monitor.
2) Do you lose any quality when you connect to an external monitor using a Mini Dock, as opposed to connecting directly from the T410s itself? The reason I'm asking is that some people claimed that using the green miniplug audio port on the dock generates a much lower volume than if they were to plug the speakers directly into the laptop instead.
~Paul
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Imac as external monitor for windows Notebook

Hi,
I want to switch from my Windows Pc to a mac for private use.
I prefer the new iMac (2011) 21,5" but I could not get an definite answer (not even in my local apple store) if it is possible to connect an existing Notebook (with VGA Mini-d-sub or DVI connector) to the new iMac in order to use the iMac as an external monitor for the Notebook.
I definitely need this for my business work in my home-office so this information is vital.
If ist is not possible I have to take the macMini and stay with my standard monitor.
Can please someone tell me if it is possible at all and if so, how it can be done.
I searched the internet and only found out that it was possible with the older 27" model but no information for the 2011 21,5" so please help!
Thank you in advance for your Support.
Celindir

Hi,
Sorry to say, but ...
The 2011 iMacs (21.5" and 27") can only be used as a second display via a Thunderbolt-to-Thunderbolt cable.
The 2009 and 2010 27" iMacs can be used as a second display via a DisplayPort connection.
http://support.apple.com/kb/TS3775 andhttp://docs.info.apple.com/article.html?path=Thunderbolt/10.6/en/30822.html
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Second iMac as external monitor; Connection via firewire without a deck/cam

Second iMac as an external monitor; Connection by firewire without a deck/camera possible?
I spend a lot of hours to find an answer to the following question, unfortunately without any success:
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Another attempt was ScreenRecycler with VNC-client on the old iMac. Unfortunately on my old iMac Os 10.3.9 is the last possible OS and no vnc client on that system is fast enough to show a video in real time.
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Message was edited by: baeumer

Don't think this is possible.
You're better off using a DAC (for example the one made by Canopus) and put your DV in and get a compatible signal out the other end for connection to your monitor.
I don't understand why you would want to go through a computer first, it would be a waste of time and add a huge delay to the signal.
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I have an early 2006 iMac 20" core duo 2.0ghz 2GB Ram.
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You might want to check out [DisplayLink|http://www.displaylink.com>
This Google Search: [multiple displays with intel imac|http://www.google.com/custom?q=multiple+displays%20with%20intel%20imac&sa= Search&client=pub-6263300333013957&forid=1&ie=ISO-8859-1&oe=ISO-8859-1&cof=GALT: %23008000;GL:1;DIV:%23336699;VLC:663399;AH:center;BGC:FFFFFF;LBGC:336699;ALC:000 0FF;LC:0000FF;T:000000;GFNT:0000FF;GIMP:0000FF;FORID:1;&hl=en]
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When asking for help, post your question in the forum. Remember to include your system type, model number and OS. Do not post your serial number.
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My TPs: Twist 2HU: i5-3317U Win 8 Pro, 4GB RAM 250GB Samsung 840 | T420 4177CTO: i5-2520M, HD+, Win 7 Pro x64, 8GB RAM, Optimus, 160GB Intel 320 SSD, Intel 6300 WiFi, BT 3.0 | T400 2764CTO: P8700, WXGA, Win 7 Ult x64, AMD 3470, 8GB RAM, 64GB Samsung SSD, BT, Intel 5300 WiFi | A20m 14.1" PIII 500 (retired). Monitors: 2x Dell U2211h IPS 100% sRGB calibrated w/ Spyder3.

Connect for 27" Imac as external monitor

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