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I have a Dell Latitude E6400, for which I purchased the following docking station:
http://www.amazon.com/gp/product/B002L9D320/
The back has two DVI inputs and one VGA input. I already have two monitors hooked up to it using DVI, but it appears I can only use one of my monitors in place of the laptop's viewport rather than in conjunction with it.
Quick and dirty research points to the use of a USB display adapter, but I don't want to use that since I hear those use the computer's CPU to render the display and I can't sacrifice any more CPU than I already am.
Edit: I should have clarified better that what I want to do is use my laptop screen in addition to the two monitors plugged into it. Thus, there will be three total viewports.
To clarify: when you connect two monitors to it, do you wish to close the laptop lid so you're not viewing the laptop screen?
Do you want to use 2 monitors plus the viewport for a total of 3 screens at the same time? – Steve – 2011-12-19T13:33:43.733
1I have the same docking station. I am able to use 2 monitors one to the DVI connection and the other to the VGA connection. – Ramhound – 2011-12-19T13:33:49.387
He wants to use 3 monitors... – Supercereal – 2011-12-19T13:36:31.943
Steve: I updated my question at the end. Your latter sentence is what I want to achieve. – oscilatingcretin – 2011-12-19T13:58:22.553
We have three of these laptops and also wanted to use two monitors, plus the laptop display to essentially have three displays. We could not make it work when running Windows 7. One of the guys decided to install KUbuntu instead of Windows and then he could have the three displays like we wanted and he just setup a VM for Windows. Seems like you should be able to make it work for Windows, but so far no luck. – None – 2013-01-16T16:41:37.840