Using an ADC monitor with G4 AGP

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Level 2

180 points

Using an ADC monitor with G4 AGP

I bought a used 15" studio dislay and hooked it to the ADC connection on the Apple Mac ATI Radeon 9000 Pro 64 MB Dual DVI ADC AGP (pulled from a G4 MDD). The monitor remains black (no sign of life) when plugged into the ADC connection. The DVI output works on a different monitor. Does the older G4 AGP architecture support powering a studio dislay thru the video card? Or is the studio display bad? I have no experience using Apple ADC connections. I have only used VGA monitors with this computer and my previous G3. Sorry if this sounds like a dumb question. I love older macs and am still trying to learn.
Thanks,
Rick

Message was edited by: Rick Hubbard

G4 AGP 1 Ghz (Sonnet), 1 GB ram, 128 MB VRAM, Mac OS X (10.4.11), 5th G iPod (30 gig), Dual USB iBook 640 MB (10.3.9), iPhone, iPod Touch

Posted on Nov 18, 2007 5:22 PM

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Answer 1

Nov 18, 2007 6:20 PM in response to Rick Hubbard

The first G4 with AGP does not have the extra connector on the motherboard to provide the monitor power to a graphics board with ADC. If you look where the card is plugged in you will see a tab on the card that is not plugged into anything. The ADC port can still be used with an adapter to VGA or DVI, but will not provide power to a display. If you really want to use an ADC display with that computer you will need an ADC to DVI adapter followed by a DVI to ADC adapter to get power to the display
<http://www.smalldog.com/product/12651830>
<http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wa/RSLID?mco=64 1148B1&fnode=home/shop mac/macaccessories/displays&nplm=M8661LL/B>
but that's a lot of money just to run a 15" display.

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Answer 2

Rick Hubbard Author

Level 2

180 points

Nov 18, 2007 6:48 PM in response to Malcolm Rayfield

Thanks for the answer. That confirmed what I thought. I have the monitor so I will see if I can come up with a reasonable DVI to ADC. Eventually I can run a larger monitor.

Thanks,
Rick

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