[Bremen]

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Well now I spoke to Dell people and they say teh PC can only address one of the slots at a time - either the PCIe or teh PCI, but not both together to allow 3 displays. I dunno how much I trust these peeps tho.

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I suspect they meant that the PC couldn't use the integrated graphics and the external card. This is true, but you're talking about using two external cards. It is possible that the computer cannot address both the pcie slot and pci for video, but I've never heard of this.