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ThinkStation D10, video OK with FX Quadro 4600. After adding a second FX Quadro 4600 (from other ThinkStation D10), I have no signal (no display).

I used to do this on two different ThinkStation S10 before with other video cards without any problem.

This happened last week and I don't have found any clue.

An help would be greatly appreciated.

Regards, Nicolas

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Have you connected the SLI bridge? Are all necessary molex plugs connected to the motherboard? –  gronostaj Jun 26 '13 at 19:14
    
What's that ? Have I to buy a SLI bridge ? sorry I am not a superuser ! :-) –  Nicolas Jun 26 '13 at 19:23
1  
BIOS conflicts mean you're likely to have a great deal of difficulty using two of the same make & model of video adapter alongside one another, unless they're in what's known as "SLI" configuration (or "Crossfire" if you're AMD). This configuration requires the adapters to communicate outside the PCIe bus, which needs a special connector called an "SLI bridge". If you're interested in trying out SLI, Nvidia's Quadro SLI FAQ is probably a good place to start. Otherwise, replace one or the other card with a different make or model. –  Aaron Miller Jun 26 '13 at 19:44
    
I have tested with two different graphic cards, no result. Is it dependent on the motherboard ? cause, I never had this kind of issue with Thinkstation S10. I just had to plug the additional graphic card... so it's very strange... (no need for a connector SLI) –  Nicolas Jun 28 '13 at 6:54

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