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This is my laptop (Acer Aspire M5): http://www.amazon.com/Acer-M5-581T-6405-i5-3337U-Dual-Core-Ultrabook/dp/B00CL8FW4S/ref=sr_1_3?s=electronics&ie=UTF8&qid=1375995507&sr=1-3&keywords=acer+aspire+m5

I have a external monitor I hooked up via HDMI, but I recently inherited another monitor of the same resolution, with HDMI capability as well. Is there a way I can have 3 extending monitors, or will it not work due to something with the video driver? I'm not too knowledgeable in this area, and I've exhausted a lot of time researching, so thanks a lot to anyone who can help shed any light on this subject :)

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If the second external monitor was going to simply be a mirror of the first, then you could use an HDMI splitter.

But to extend your desktop, not just with another cable. You would need 2 HDMI ports on the laptop to support this. The OS needs to uniquely identify each extended display to function correctly. You could use a USB graphics adapter to extend with the extra monitor, though I hear performance of those can be hit and miss

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  • Yeah that's what my research is looking like. I'd like to avoid the USB adapter :\
    – A O
    Commented Aug 8, 2013 at 21:30
  • I've heard that USB 3.0 graphics adapters can handle 1080p screens with good results. USB 2.0 ones are acceptable for work, but not for movies/gaming.
    – gronostaj
    Commented Aug 8, 2013 at 21:31
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The Matrox Multi Monitor adapter accepts DVI which is easily converted from HDMI. This will work:

http://www.matrox.com/graphics/en/products/gxm/th2go/digital/

Costs roughly $300, not exactly optimal, plus it just takes the full resolution and spreads it across your screens. Allows up to 3 external monitors.

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