Looking for an easy way to add a second monitor? The JUA330U USB 3.0 Display Adapter works as an external video card, instantly allowing users to attach additional displays via a DVI, VGA, or HDMI connection without the hassle of a lengthy setup or having to install additional internal hardware. The USB 3.0 Display Adapter can support up to four displays running on the same computer, turning your workstation into a fully-functioning multi-display powerhouse.