Duplicate and extend your small screens: this USB3. 0 to HDMI VGA adapter allows you to connect from your USB 3. 0 enabled input devices(such as laptops, desktops) TO your external big displays with HDMI and VGA Female port(including HDTV, projectors, monitors) through an HDMI or VGA. HDMI and VGA displays can be connected simultaneously, but it can only extend the same views in these two additional monitors.