Help Connecting 3 Monitors To Dell Optiplex 990

nitros7

Hi Guys
Need a little help from someone who may be a little more knowledgable on this than me! I have a Dell Optiplex 990 running Windows 7 Pro X64. It has a AMD Radeon HD 7570 installed which has a DVI and Display Port Output. This card is currently running my two monitors.
Trouble is I need to connect a third monitor and there are 2 more built in display ports along with a VGA which I cant seem to get working with the 3rd Monitor. I have enabled the advanced viewing setting in the Bios that should alow both the Onboard and HD 7570 graphics to work in tandum.
With the third monitor plugged in windows is recognising that something is there but will not extend the desktop to it. Any Ideas?

BloodBath

You would need an "active display port adaptor" I'd say. One of these depending on what connections are being used.

http://www.amazon.co.uk/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=active%20display%20port%20adaptor

nitros7

Thanks for the reply. Are you sure that will work? Have you trie dit or seen it working anywhere?

BloodBath wrote: »

You would need an "active display port adaptor" I'd say. One of these depending on what connections are being used.

http://www.amazon.co.uk/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=active%20display%20port%20adaptor

BloodBath

No I'm not sure but most graphics cards will only display 2 monitors with standard connections. You need active displayport adaptors after that. Assuming your spare display port connections are from the graphics card then it should work.

nitros7

The spare port is actually an onboard one will this make a difference?

BloodBath

It may well do. How many connections on the card itself?