How to Connect Two Computer Towers to One Monitor

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How to Connect Two Computer Towers to One Monitor
A KVM switch shares a keyboard, mouse and monitor. (monitor image by terex from Fotolia.com)

The tower is where all the action takes place in a computer, but you still need the monitor and other peripherals, such as a keyboard and mouse, to use it. If you have more than one tower, however, desktop real estate can become a problem. Installing two monitors, along with two of every other peripheral, is not always possible based on the desk's design. Instead, you can share one monitor between two towers by using an adaptor or switch.

Skill level:
Easy

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Things you need

  • KVM (keyboard, video, mouse) switch or cable

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Instructions

  1. 1

    Buy a KVM switch from a local or online electronics retailer.

  2. 2

    Turn off the power to the both the two computer towers and the monitor.

  3. 3

    Screw the blue VGA (video graphics array) cable connector extending from the back of the monitor to the blue VGA connection on KVM switch. Consider connecting the mouse and keyboard later.

    How to Connect Two Computer Towers to One Monitor
    LCD monitors use less desktop space than CRT monitors. (Monitor image by Caila from Fotolia.com)
  4. 4

    Screw the two VGA cable connectors extending from the KVM switch to the VGA connectors on the back of the two computer towers.

    How to Connect Two Computer Towers to One Monitor
    The KVM switch is equipped with two VGA cables. (connection cocnept - cables studio isolated image by dinostock from Fotolia.com)
  5. 5

    Power on the two computer towers.

  6. 6

    Press the button on the KVM switch to change the computer tower display back and forth on the monitor.

Tips and warnings

  • Some KVM switches also have "hotkey" functionality, which allows you to press a key on the keyboard to switch between displays. Read the manufacturer's manual for details.

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