Dual monitors using DVI / VGA ports on motherboard

J. L. jl.ffm at gmx.net
Mon Mar 21 16:58:48 UTC 2011


Am 21.03.2011 17:29 schrieb Jordon Bedwell:
> On 3/21/2011 11:10 AM, Dotan Cohen wrote:
>> Hi all, I have this motherboard in my computer:
>> Asus M3A78-EMH HDMI
>> http://www.asus.com/Product.aspx?P_ID=khuIilXQjwItSrPi
>>
>> I wonder if I could attach two monitors to the system, one to DVI and
>> one to VGA, and have the computer recognise them as separate outputs.
>> I'd simply try but I don't yet have an additional monitor to test on
>> at the moment (everything I own is VGA). Does this sound reasonable?
> 
> Yes, after a quick Google several people have stated that it has dual
> monitor support out of the box.

I've got the quite similar Asrock (ASUS subsidiary) model M3A790GXH/128M
http://www.asrock.com/mb/overview.asp?Model=M3A790GXH/128M
and it works like a charm as DVI-VGA-dual-monitor-solution.

>> Failing that, if I were to add a discrete PCIe graphics card would I
>> be able to use both the onboard VGA output and the card's VGA output
>> as separate monitors? Or would I need a graphics card with two
>> outputs?

> 
> No, the design logic of most boards is to auto-disable the onboard if
> you have another card installed.

You are really sure?

I have not verified this personally but at least to my knowledge my
above mentioned Asrock board should offer this feature, at least with
AMD / ATI graphics cards.

Perhaps it would be best to check this with ASUS or AMD respectively!

Good luck!

J. L.




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