bi-directional Mini DisplayPort

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Level 1

126 points

bi-directional Mini DisplayPort

I have a Mini DisplayPort to HDMI adapter, have my cable box currently connected to my 27-inch iMac... how do I get the "bi-directional" thing working? Shouldn't the iMac switch to being a display as soon as I connect the Mini DisplayPort?

Is it not possible to watch cable TV on my iMac?

If it's possible, how do I do it?

(So far, the only thing I was able to do with the adapter is use my TV as a secondary monitor for my computer.)

 iMac11,3  2.93 GHz Intel Core i7  4 GB 1333 MHz DDR3, Mac OS X (10.6.5),  iMac8,1  2.66 GHz Intel Core 2 Duo  4 GB 800 MHz DDR2 SDRAM

Posted on Mar 2, 2011 8:39 AM

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Answer 1

Dah•veed

Level 9

67,037 points

Mar 2, 2011 1:06 PM in response to _Eric_

The mini-DisplayPort is only bi-directional when the signal it is receiving is a DisplayPort signal. That adapter is uni-directional, m-DP to HDMI and nothing more. If the device that you wish to use with your 27' iMac in Target Display Mode does not have native DisplayPort output then you need a US$150 converter from Atlona or Kanex.

http://www.kanexlive.com/products/kanexXD.html
http://www.atlona.com/Atlona-HDMI-to-Mini-DisplayPort-Converter-and-Scaler.html

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Dah•veed

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