Before you jump in, you should make sure your computer, or more precisely, your computer’s graphics card is able to support dual monitors. If your graphic card has only one video port, it is not possible to use dual monitors without an additional graphics card. This, however, is uncommon because most modern computers have at least have two video ports, meaning that it is possible to connect dual monitors. Those ports might be of any type - VGA, DVI, HDMI, Type-C or DisplayPort. If your extra monitor connector type is different from monitor`s, you might have to use an adapter.