Reddit mentions of Plugable USB C to HDMI 2.0 Adapter Compatible with 2018 iPad Pro, 2018 MacBook Air, 2018 MacBook Pro, Dell XPS 13 & 15, Thunderbolt 3 Ports & More (Supports Resolutions up to 4K@60Hz)

Hi Microsoft specifically recommends these adapters:

USB 3.0 Type C to HDMI (with Thunderbolt 3 support):

• Plugable USB-C to HDMI 2.0 (https://www.amazon.com/dp/B0727QQLV2 or https://www.amazon.com/dp/B01FIVSC6Y)
  
• Accell USB-C to HDMI 2.0 (https://www.amazon.com/dp/B01FIVSC6Y)
  
• Microsoft USB-C to HDMI 2.0 adapter (https://www.amazon.com/dp/B076KRFB8X)
  
  Source:
  https://support.microsoft.com/en-us/help/4039260/windows-10-mixed-reality-pc-hardware-guidelines
  
  I think the headset cables are long enough to reach to the other side of the laptop to plug into the USB 3.0 A port - but a 3-foot USB 3.0 extension cord would be OK to use to optimize cable management. Keeping the adapters simple is probably a good bet as USB-type-C compatibility is ironed out. I recommend staying away from cheap, off-brand multi-function usb-type-C hubs that have hdmi+ethernet+usb ports all-in-one.

display port to hdmi adapter I use: https://www.amazon.com/gp/product/B01FIVSC6Y/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

does full 4k 60hz 4:4:4

Then I just paired it with an amazon basic cable 18gbps

Plug this into either of the two Thunderbolt 3/USB C ports on the P71 ;)

Not at all.

The USB-C port on the Apple TV is for servicing purposes only. Not for regular users to use.

Even if it was a fully functional USB-C port, USB-C isn't magic.

It will only support what the host device actually supports.

Currently, there are no USB-C to HDMI 2.1 dongles on the market.

However, even when they become available, I guarantee you will not be able to just plug them into the Apple TV and get HDMI 2.1.

You must have seen HDMI 2.0 dongles like this one:

https://www.amazon.com/Plugable-Compatible-Thunderbolt-Supports-Resolutions/dp/B01FIVSC6Y/

Dongles like this are not magic. They will not automatically work with any USB-C device. They will only work with devices that specifically support sending a HDMI 2.0 signal over the USB-C port.

The host device need to be electrically wired to do this. The Apple TV 4K is not.

Additionally, the graphics in the device need to be capable of outputting a HDMI 2.1 signal. The A10X in the Apple TV 4K is not capable of that.

https://smile.amazon.com/Plugable-Chromebook-Thunderbolt-Supports-3840x2160/dp/B01FIVSC6Y

You can certainly spend a lot on a displayport KVM switch, or, use a USB switch for your peripherals (plugged into a USB Hub) ala

https://www.amazon.ca/gp/product/B00JX3Q28Y/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

and then use this on your MBP for video: https://www.amazon.ca/gp/product/B01FIVSC6Y/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 . It's HDMI vs Displayport, but with https://www.amazon.ca/gp/product/B01EFQWP0C/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1 then I can also hook up my Xbox to the monitor.

Not amazingly cheap, but about a third of the price of displayport switch linked by mygocarp.

Source: am doing just that.

If you aren't used to it you may not notice it, but after you use 60hz and switch back to 30hz it is very noticeable.

I picked up one of these to get 4k/60hz support and found it to be totally worth it: https://www.amazon.com/gp/product/B01FIVSC6Y/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Yep maybe try this USB-C to HDMI 2.0 adapter, with and without the dock

https://www.amazon.com/Plugable-Thunderbolt-Supports-Displays-3840x2160/dp/B01FIVSC6Y

This one works amazing.

https://www.amazon.ca/gp/product/B01EXKDRAC/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1

This also seems legit, but I am tempted to just have the Display Port Cable instead.

https://www.amazon.ca/Plugable-USB-C-HDMI-Chromebook-ThunderboltTM/dp/B01FIVSC6Y/ref=sr_1_1?s=electronics&ie=UTF8&qid=1493836186&sr=1-1&keywords=usb+c+to+hdmi+2

> I was connecting to a USB to HDMI

This sounds like you are using a DisplaLink device which is a USB driven graphics adapter (there is a lightweight gpu in the device that does the processing). While they are decent devices, you will get better performance and more supported resolutions if you run the HDMI straight off of the internal GPU via USB-C to HDMI directly. Something like this: https://www.amazon.com/CAC-1504-Chromebook-Thunderbolt-Supports-3840x2160/dp/B016QO8186

Or this: https://www.amazon.com/Plugable-USB-C-HDMI-Chromebook-Thunderbolt/dp/B01FIVSC6Y

Not saying that was for sure your issue but if you are doing presentations regularly I would suggest getting something like the above.

I just received this adapter today https://www.amazon.com/dp/B01FIVSC6Y but I'm having some trouble. When the USB and HDMI are plugged in, the Windows Mixed Reality Portal says "Check your display cable. Make sure your headset's display cable is plugged in correctly."

Not sure if I'm doing something wrong, adapter is a dud, or my headset doesn't work. I haven't been able to use it yet.

That won't work, since the XPS models lack a Mini DisplayPort connector, you would need something like https://www.amazon.ca/Plugable-Chromebook-ThunderboltTM-Supports-3840x2160/dp/B01FIVSC6Y/ref=sr_1_3?s=electronics&ie=UTF8&qid=1485650405&sr=1-3&keywords=usb+c+to+hdmi+2 this, since it's thunderbolt port uses a USB Type C Connector.