We got the Samsung Galaxy Note 9's DeX to work with an HP Elite X3 Lapdock
By Gadjo Cardenas Sevilla
As I've been testing the Samsung Galaxy Note 9, it occurred to me to try the DeX (Desktop Experience) feature which creates a PC-like interface when plugged into an HDMI-enabled monitor. Instead of plugging-it into a desktop monitor, I dusted off my HP Elite X3 Lapdock accessory which was designed for use with Microsoft's Windows 10 Continuum.
The Elite X3 dock is a premium accessory, it is powered by USB Type-C and connects to Windows Phones using USB Type-C as well as wirelessly. I used it briefly with my Elite X3 Windows Phone, mostly for Office 365 access.
To my surprise, plugging in the Galaxy Note 9 doesn't only enable DeX on the Elite X3 Lapdock, it gives automatic access to the keyboard and mouse.