http://www.techradar.com/news/samsung-galaxy-s9-likely-to-have-a-new-dex-pad-accessory

Late last year we heard rumors that Samsung might launch a new accessory alongside the Galaxy S9, dubbed the Dex Pad, and it looks like those rumors were right, as a Dex Pad has now been trademarked by Samsung in Europe.

The PDF filing doesn’t reveal much other than the name, but does add that the Dex Pad is designed for “projecting the screen of mobile device to displays via computer peripheral devices and wireless networks.”