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Hello &nbsp;ServDeskKnows, take a look at the monitor socket you have there on your Lenovo, I can't see any references to this with your link but what you can consider is Dual monitor extenders, adapters, or a KVM switch<br />
see the checklist here then work from there<br />
&nbsp;Dual monitor setup<br />
<a href="http://www.microsoft.com/athome/organization/twomonitors.aspx" rel="ugc">http://www.microsoft.com/athome/organization/twomonitors.aspx</a><br />
KVM switch<br />
<a href="http://www.esis.com.au/Adv3Acc/Adv3Acc0_ExtAccKVM.htm" rel="ugc">http://www.esis.com.au/Adv3Acc/Adv3Acc0_ExtAccKVM.htm</a><br />
CinemaView Duo Dual Display Extender for Mini DisplayPort<br />
<a href="http://www.amazon.com/CinemaView-Dual-Display-Extender-DisplayPort/dp/B003QDHWWC" rel="ugc">http://www.amazon.com/CinemaView-Dual-Display-Extender-DisplayPort/dp/B003QDHWWC</a>
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Hello  ServDeskKnows, take a look at the monitor socket you have there on your Lenovo, I can't see any references to this with your link but what you can consider is Dual monitor extenders, adapters, or a KVM switch
see the checklist here then work from there
 Dual monitor setup
http://www.microsoft.com/athome/organization/twomonitors.aspx [http://www.microsoft.com/athome/organization/twomonitors.aspx]
KVM switch
http://www.esis.com.au/Adv3Acc/Adv3Acc0_ExtAccKVM.htm [http://www.esis.com.au/Adv3Acc/Adv3Acc0_ExtAccKVM.htm]
CinemaView Duo Dual Display Extender for Mini DisplayPort
http://www.amazon.com/CinemaView-Dual-Display-Extender-DisplayPort/dp/B003QDHWWC [http://www.amazon.com/CinemaView-Dual-Display-Extender-DisplayPort/dp/B003QDHWWC]

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I ordered one. &nbsp;Thanks!
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<u><b>QUESTIONS:</b></u><br />
Can anyone recommend a graphics card compatible with this machine? &nbsp;How can I ensure that the card will fit and be compatible before I order it?<br />
<br />
<u><b>SITUATION:</b></u><br />
I have a Lenovo ThinkCentre M91p 4480-B1U and I need a graphics card to drive two display at a recommended resolution of 1920 x 1080. &nbsp;Two HDMI outputs on one card is ideal. <br />
<br />
<u><b>LINKS TO SPECS:</b></u><br />
DUAL DISPLAY: <a href="http://www.neweggbusiness.com/Product/Product.aspx?Item=N82E16824001461" rel="ugc">http://www.neweggbusiness.com/Product/Product.aspx?Item=N82E16824001461</a><br />
<br />
COMPUTER: <a href="http://www.cdw.com/shop/products/Lenovo-ThinkCentre-M91p-4480-Core-i5-2400-3.1-GHz/2337210.aspx" rel="ugc">http://www.cdw.com/shop/products/Lenovo-ThinkCentre-M91p-4480-Core-i5-2400-3.1-GHz/2337210.aspx</a>
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QUESTIONS:
Can anyone recommend a graphics card compatible with this machine?  How can I ensure that the card will fit and be compatible before I order it?

SITUATION:
I have a Lenovo ThinkCentre M91p 4480-B1U and I need a graphics card to drive two display at a recommended resolution of 1920 x 1080.  Two HDMI outputs on one card is ideal. 

LINKS TO SPECS:
DUAL DISPLAY: http://www.neweggbusiness.com/Product/Product.aspx?Item=N82E16824001461

COMPUTER: http://www.cdw.com/shop/products/Lenovo-ThinkCentre-M91p-4480-Core-i5-2400-3.1-GHz/2337210.aspx

Compatible Graphics Card for Lenovo ThinkCentre M91p 4480-B1U to drive two 1920 x 1080 displays

Components are those devices that are internal to a computer -- the PC boards, the central processor (CPU), the memory (RAM), disk and video controllers and so on.

Components

A monitor or a display is an electronic visual display for computers, usually comprised of the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) thin panel, while older monitors used a cathode ray tube (CRT) about as deep as the screen size. They are connected to the computer via VGA, DVI, DisplayPort, Thunderbolt, LVDS or other proprietary connectors and signals.