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How To Connect Two Monitors To One Computer

Much like two heads, two monitors are better than one. Expand your workspace with a minimum of fuss.


  • Step 1: Find an open port Look at the back of your computer and locate an available VGA or DVI port. The VGA or DVI cord from the second monitor will fit the port.
  • TIP: Purchase and install an AGP or PCI video card if your computer does not have an available port.
  • Step 2: Attach second monitor Plug in the second monitor and turn it on. Connect the best monitor to the DVI port to optimize your hardware. Restart your computer.
  • TIP: If neither monitor comes with a DVI port, use a DVI-to-VGA adapter to connect the monitor.
  • Step 3: Setup on Windows Set up the second monitor on a PC by right-clicking the Desktop and then clicking Properties. On the Display Properties window, click the Settings tab.
  • Step 4: Activate Dualview Click the Display drop-down list, and select External Monitor. Check the box Extend my Windows Desktop onto this Monitor, and then click Identify.
  • Step 5: Arrange Match the physical arrangement of the monitors by dragging the monitor icons. Then click OK.
  • Step 6: Use System Preferences Arrange the displays on a Mac by clicking System Preferences, and then selecting the Displays pane. Click Arrangement and drag the icons to match the arrangement of your monitors.
  • FACT: CRT computer monitors contain between 4 and 8 pounds of lead.

You Will Need

  • Computer with an open port
  • Second monitor
  • VGA or DVI cord
  • AGP or PCI video card (optional)
  • DVI-to-VGA adapter (optional)

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