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A Dell D630 with port replicator has the laptop's LCD screen, plus add'l VGA and DVI. I know either the VGA or DVI ports work for second screens, but can both the VGA and DVI be employed for 3 screens?

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up vote 1 down vote accepted

You can only use two of the three displays at any given time.

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This is correct. In a office scenario with the docking station, you can use two monitors(one each with VGA and DVI), but then you cannot use the onboard LCD itself. Pick two out of three – prestomation Dec 14 '09 at 19:50
How about the s-video out, does this apply to the 2 of the 3? – Xepoch Dec 19 '09 at 21:59
I seriously doubt it. I believe the video circuitry on has two RAMDAC (or the digital equivalent). If you need more video outputs I would suggest the USB variants to add another. Check out the kits at – Goyuix Dec 20 '09 at 4:53

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