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Summary: Hook up two computer monitors to a desktop computer by making sure each monitor has a DVI connection and that the computer has a graphics card that supports two monitors. Use two DVI cables to connect each monitor to the computer with instructions from a media and electronics specialist in this free video on computers.
Mark Arce is the Bay Area media representative for Best Buy. He and his crew are Geek Squad electronics experts.read more
"Hi, this is double agent Arce with the Geek Squad here to show you how to connect your computer to two monitors simultaneously, get that expanded display. So the first thing your going to need obviously is going to be two monitors. And once you've got those monitors, you're going to want to make sure that they have a DVI connection cause that supports kind of the higher resolutions and will give you a better signal there. The next thing you'll need is two DVI cables. So two of these cables will allow you to connect the monitor to your computer to make sure you can get the best connection possible. To connect those cables to your computer, you're going to need a graphics card that supports multiple monitors and we have a graphics card here that actually has two DVI ports on the card itself. And that way you'll be able to connect each monitor directly to the card and expand your monitor, expand your desktop or actually you can clone your desktop if you want to have the monitors mirroring the same display. There may be some tweaking of settings in Windows that you'll need to perform whether you clone it or expand your desktop and if you need help with that an agent is just a phone call away."
eHow Article: How to Hook Up 2 Computer Monitors to a Desktop Computer