Samsung DeX Pad enables you to turn your Galaxy smartphone into a true desktop computing experience. By docking your smartphone into the DeX Pad. Your phone will launch a special DeX mode on the connected external monitor and applications can be opened in multiple separate windows. So, you can connect a mouse or keyboard for added productivity or even use your phone screen as a touchpad. While in the DeX Pad. And, Use your Galaxy S9 or S9+ as a touchpad to navigate the rich desktop-like experience of Galaxy Desktop. Find also Dex Station.