We got the Samsung Galaxy Note 9's DeX to work with an HP Elite X3 Lapdock
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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.