OK, I have a Dell Optiplex and on the back there is only one VGA video card port, but I am trying to connect two monitors and set one monitor up as the primary while using the second monitor as a extended view for the desktop of my primary monitor. What I have done is purchased a vga splitter cable with hopes of being able to set the monitors up the way I described above. First, I connected the vga male splitter cable into the vga video card and then connected one female cable end to a vga cable that is connected to a monitor and then connected the other vga female cable end into the vga cable for the other monitor. I noticed right away that both the monitors were on, but the display was showing the same desktop for each monitor.
How to Use a Dual Video Monitor VGA Y-Splitter Cable
Doing so will enable you to increase your productivity since you have such a wider workspace. No more wasting time maximizing, minimizing and positioning windows. Look at the back of your computer.
An extended desktop allows you to mirror your primary desktop, extend it so that the information is spread over two or more monitors, or enables you to have two different outputs in the different monitors. Windows 8 and 8. They are typically color coded with blue plastic. Many computers come with a single VGA port. However, this does not mean that you cannot extend the desktop.