Imac 27 inch medio 2010 won't enter target display mode

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Level 1

8 points

Imac 27 inch medio 2010 won't enter target display mode

I've recently bought a Thunderbolt cable from a Apple Partnered store, for use with my old Imac 27 inch medio 2010.

The reason i bought the cable was, to use my imac as an external display.

I connected it to my newer MacBook Pro Retina, 15-inch, Late 2013, as it is instructed on Use your iMac as a display with Target Display Mode - Apple Support.

However, as I tried, my imac did not enter Target Display Mode...

I have pressed Command + FN + F2 many times, and nothing really happens...

It only opens Displays in System preferences 😟

Any help? 🙂

MacBook Pro, iOS 7.1, software problems, booting problems

Posted on Oct 20, 2015 1:13 PM

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Answer 1

rkaufmann87

Level 10

148,636 points

Oct 29, 2015 8:28 AM in response to chrize4

You got the wrong cable!!! Thunderbolt was released in 2011 iMacs. Your 2010 27" iMac has a mini display port. You need a mini- display port cable to activate TDM with your iMac and your MBP.

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Answer 2

chrize4 Author

Level 1

8 points

Oct 29, 2015 8:32 AM in response to rkaufmann87

Thank You! It worked!

They said a Thunderbolt to Thunderbolt cable would work, as it is backwards compatible.

However, this wasn't the cause in my scenario 😝

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Answer 3

rkaufmann87

Level 10

148,636 points

Oct 29, 2015 8:54 AM in response to chrize4

chrize4 wrote:

Thank You! It worked!

They said a Thunderbolt to Thunderbolt cable would work, as it is backwards compatible.

However, this wasn't the cause in my scenario 😝

Your welcome, if you agree this has been answered please mark the thread as such. This may help another user.

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