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[rjheys]

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[rjheys]

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[FX120]

That adapter only works with the laptops, which have analog support.

Analog signaling is not part of the DisplayPort standard, and is not included on your ATi 4870.

 

[rjheys]

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[FX120]

So the mini Display Port on the Macbook's and the mini Display Port on the Mac Pro's are Different???

Not the physical connector, but the circuitry behind them, yes.

It should be noted that on Apple's store page for the mDP-VGA adapter, compatability is only listed as "Macbook, MacBook Pro, and Macbook Air".

Just buy a DVI-VGA adapter, online they cost only a few bucks.

 

[Flash SWT]

It should be noted that on Apple's store page for the mDP-VGA adapter, compatability is only listed as "Macbook, MacBook Pro, and Macbook Air".

That compatability note is not presented with the adapter when viewed as an option when customizing a Mac Pro order. This is what is listed on the Mac Pro order page:

Mini DisplayPort to VGA Adapter
Use the Mini DisplayPort to VGA to connect to a standard analog monitor, projector, or LCD that uses a VGA connector or cable. Review the documentation or check with the manufacturer of your monitor to make sure you're choosing the right adapter.

I see no reason to think it would not work with a Mac Pro when it is specifically offered as an option when ordering one.

 

[rtheb]

Did you install the firmware update?

Check thread here Apple Releases Mini DisplayPort to VGA Firmware Update 1.0

 

[rjheys]

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