Could not find anything about this on the GoogleĪccording to Samsung, dex doesn't support 4k. Or if i connect to the HDMI through a USBC hub it can help push more power through to stream 4k seeing as the roku stick and xbox one x have more power to push more data through HDMI? Thinking out loud. It requires 45w to power the monitor which is why its able to super fast charge my phone. But im thinking that I maybe need a USBC docking station to power the monitor and stream the 4k. One USBC port is to power the monitor and the other is for charging and streaming. What am i missing here? A fancy 4k USBC cable? A USBC docking station? Do i need a seperate power source to push 4k assuming that my phone by itself cant push 4k by itself? When my phone is connected to the monitor it can super charge my phone while its streaming DeX. I have a few USBC cables and all of them can super charge my phone so im guessing they are USBC 3.0.

(monitor has USBC and HDMI ports) I can wirlessly connect DeX to the roku stick and its in 4kĪccording to Google a USBC cable is capable of streaming 4k. I even had a USBC to HDMI cable and it still wouldnt display 4k. I can display 4k when my roku stick or xbox one x is connected through HDMI. Only option I have is 1080p.Ĭurrent setup is galaxy s20 ultra 512GB (16GB ram vs 12GB on other ultra models) and a 4k portible monitor (uperfect 4k portible monitor 299 on amazon). Having issues trying to display 4k with Samsung DeX through a USBC cable.

Samsung dex s21