If you’re looking to connect two ViewSonic dual monitors, it’s actually a very simple process. All you need is a VGA cable and an HDMI cable.
First, plug the VGA end of the cable into one of the monitors and plug the HDMI end of the cable into the other monitor. Next, find an open USB port on your computer and plug in the power cord for both monitors. Finally, turn on both monitors and your computer.
The ViewSonic dual monitor setup will now be ready to use!