Old Lenovo Desktop split screen(extended screen)

So I have an acer monitor my lenovo computer; the acer tech told me since my Lenovo desktop is from 2009(doesnt have hdmi) even if I bought a adapter for the VGI port it would only show a duplicate screen within the other screen rather than an extended screen. The extended screen is what I need; and was wondering if I bought a set of dual screens would it do the same; meaning two duplicate screens rather than an extended screen?

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Can't answer.

The graphics in this model is unknown and I've seen where the unit disables the onboard ports so you can't use them. But it has NOTHING to do with the age as I've been using extended screens since XP days. It's just a matter of the graphics setup but here I can't tell what you have.

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While I held out hope for more information.

Let me add another way to get more video outputs. Many PCs could use those USB Video Cards. These come in a variety of configurations so you get one that has the output port you need. Usually well under 99USD.

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Only one video port VGI

It would be possible to split the current display to two different displays but with only one port, expanded and extended display options are not possible. I have both VGA and HDMI so I use the VGA to an ASUS 27 inch and the HDMI feeds a Vizio 47 inch on the expanded option. But you need two video ports.

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