I have a DX4200-09 and bought a Sapphire HD4550 to help the graphics, but the system did not like it. I downloaded the new driver from the web, and it created a loop. I had to remove the card from the system and let windows reinstall the driver. It still did not work. I was able to get two monitors but could not split them into two seperate monitors. I am retirning the card for another unless someone has a better idea.
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