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Questions: VGA only LCD Monitor on DVI-I port

Last response: in Graphics & Displays
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July 4, 2013 12:02:19 AM

So basically I'm planning to setup dual-display in my system using PowerColor Radeon HD5550 graphic card. Right now, my monitor is attached to the VGA port of the said card. The card has 3 ports(VGA, DVI-I, HDMI).

Would it work if I use a VGA cable + passive VGA to DVI-D adapter? I understand that DVI-I female is compatible with DVI-D male, but as I've read, DVI-D only transmits digital and VGA does analog. So would that be possible using a passive adapter? Here's a photo of the said adapter.

http://www.cdrking.com/apanel/modules/products/images/l...
http://www.cdrking.com/apanel/modules/products/images/l...

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July 4, 2013 12:38:16 AM

DVI-I and DVI-D are not compatible, no.
- At least, specifically, not in this way.

Most newer motherboard manuals are full of warnings stating that the DVI is for DVI only and WILL NOT WORK for VGA monitors.

This is done to reduce costs and remain competitive in the marketplace.

Dragging backwards compatibility on forever only increases costs.
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July 4, 2013 6:28:17 AM

Tabris DarkPeace said:
DVI-I and DVI-D are not compatible, no.
- At least, specifically, not in this way.

Most newer motherboard manuals are full of warnings stating that the DVI is for DVI only and WILL NOT WORK for VGA monitors.

This is done to reduce costs and remain competitive in the marketplace.

Dragging backwards compatibility on forever only increases costs.


So what is the best way for me to do it?..
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July 4, 2013 7:47:27 AM

If the adapter is cheap enough or you got it for free with the video card there is no harm in trying it.

Initially I slightly misread your post, the subject line indicates the target monitor is, or might be, a LCD/TFT type.

In that case it 'might' work, but your post isn't 100% clear to me: You have not specified which monitor(s) you are planning to use and on which ports (at least not clearly enough for me to understand without considerable effort).

Initially I just thought you wanted to attach a CRT (monitor) to the DVI-I port using DVI-D to VGA.... after re-reading your post three times I still do not know what the model of the two monitors are or if they are the same.

Your post doesn't mention the monitor, only the subject line.
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July 4, 2013 5:52:50 PM

Tabris DarkPeace said:
If the adapter is cheap enough or you got it for free with the video card there is no harm in trying it.

Initially I slightly misread your post, the subject line indicates the target monitor is, or might be, a LCD/TFT type.

In that case it 'might' work, but your post isn't 100% clear to me: You have not specified which monitor(s) you are planning to use and on which ports (at least not clearly enough for me to understand without considerable effort).

Initially I just thought you wanted to attach a CRT (monitor) to the DVI-I port using DVI-D to VGA.... after re-reading your post three times I still do not know what the model of the two monitors are or if they are the same.

Your post doesn't mention the monitor, only the subject line.


Oh, I forgot. Sorry. Anyways, I'll be using a HP 17" LCD (square one) and a ViewSonic 19" LCD(HD). Both LCDs has only VGA port. Although viewsonic has an audio port behind, I've never used it anyway. i'll post the model of the LCDs when I get home. Thanks
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