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Switcher Hangout The place for switchers to discuss their new machines, and how to work with OS X. General support can be had here for newbie stuff, like "How do I restart my new iMac?" :)

Connecting my PC laptop to iMac screen


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Pctoimac

 
Member Since: Oct 21, 2011
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Hmm, I thought Apple was the grand daddy of all things plug-n-play? Obviously not so much when trying to interface your PC with a Mac.

Quick background, I bought a new i5 iMac as my work computer recently. I've been using PC laptops all my life, so I also wanted to have the option to use the (absolutely) beautiful iMac screen as an external monitor when I wanted to.

My laptop is Alienware M11XR2, it has both a display port and HDMI video output ports. The first thing I tried was to buy an HDMI to mini display port adapter (since I already had an HDMI cable) to connect my HDMI output to iMac's Thunderbolt port. For only $5.70 each when QTY 50+ purchased - Mini DisplayPort | Thunderbolt to HDMI Adapter w/ Audio Support | Mini DisplayPort to HDMI / DVI / VGA Adapters

It didn't work.

Later I learned that iMac's (or Thunderbolt protocol in particular) really are not that clever, in the sense that they only work with a display port to display port cable. Oh well, I was in luck because my 11'' laptop somehow had a display port, too. Great !

So I went ahead and bought the following cable: Amazon.com: 6ft DisplayPort Male to Mini DisplayPort Male 32AWG Cable (Gold Plated Connectors): Electronics

I received the cable last night and came to work this morning all pumped about how I can use my beastly but tiny laptop on the huge iMac screen. And guess what, it didn't work again. I tried everything, but my laptop won't recognize iMac screen as an external screen and on iMac I cannot put it in Target Display Mode as Command - F2 doesn't seem to respond.

I'm in desperate need of help. I don't want to go ahead and spend another $20 just to be heartbroken again.
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bobtomay

 
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Quote:
Originally Posted by Pctoimac View Post
...

My laptop is Alienware M11XR2, it has both a display port and HDMI video output ports....
And the 2011 model iMac has either 1 or 2 Thunderbolt output ports...

It does not have a video input port - same as your Alienware does not have a video input port.

Unless you upgraded it to include a video capture card when you purchased it or added an external video capture card to it.

I cannot be held responsible for the things that come out of my mouth.
In the Windows world, most everything folks don't understand is called a virus.
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Pctoimac

 
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Ok, so are you saying that the two thunderbolt ports on iMac are output ports and not input ports. Which would mean it's impossible to use the screen on iMac as external screen?

I'm sure that's not the case. Check this out on Apple forums: https://discussions.apple.com/thread...art=0&tstart=0

Even on Apple's website, it says that you can connect your display port compatible devices to iMac and use it as an external monitor. Thunderbolt ports function as both input and output.
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bobtomay

 
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You are reading a late '09 thread. The late '09 27" iMac did indeed accept input from displayport devices, as did the mid '10 27" models via their mini displayport input.

From my understanding, in order to use the TB port for input, it must be connected to another TB port. Here is a current thread related to the new TB iMac at the appleforums - link and another and another.

There is no mention of being able to use the TB model iMac on Apple's site as an external display for any other devices. I have also not seen any 3rd party adapters that will allow any other connection besides TB to TB as an input on the iMac at this time.

I cannot be held responsible for the things that come out of my mouth.
In the Windows world, most everything folks don't understand is called a virus.
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dekan

 
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I second what bobtomay says - looking at the tech specs for the iMac, the audio-in is the only input it has (besides mouse, keyboard, ...). No video in.

I'd suggest you activate remote desktop on your Windows laptop or install a VNC server. There is Mac versions for "Remote Desktop Connection" and "VNC viewer" that let you access your Windows machine. The good thing is that you only need your Mac mouse/trackpad and keyboard...

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Pctoimac

 
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Oh wow, thanks guys. I'm sorry but I'm gonna have to call BS here for what Apple did.

I understand screwing over people like me, lowly, PC users. But screwing over people with Macbook's that don't have a Thunderbolt output port, I can't tell if that's just being greedy or cocky (or probably both).

Windows Remote Desktop installed and being happily used as of this writing. Thanks everyone for your help (though squashing my dreams )
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Dysfunction

 
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.... and in other news.. technology marches on.. specifications change.

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