The XCH-M180GY USB Type C to HDMI Cable with 60W PD Charging Port Adapter is awesome for Samsung DeX mode! It’s like it was made for DeX! Works great with my Samsung Galaxy S8+ as you can see in the video below.
USB Type-C power delivery allows you to charge the newest MacBook Pro, Samsung Galaxy S8 or newer, or other type-c devices up to 60W even while transmitting high-definition audio and video from your computer to an HDTV.
The cable supports crystal-clear 4K@60Hz UHD or Full HD 1080p on HDTV, secondary monitors, or projectors. Backwards compatible with 1080p/720p/480p/360p resolutions.
It has great compatibility. It's compatible with 2018 iPad Pro, 2018 / 2017 / 2016 MacBook Pro, Surface Book 2, 2017 iMac, 2017/2016/2015 MacBook, Samsung Galaxy S8 / S9 / Note 8, HTC U11, Pixelbook, Dell XPS 15 / XPS 13, HP Envy 13, HP Spectre X360, Chromebook, Chromebook Pixel and more.