Macbook 12" (2017) 4K@60Hz

[Mcrumors David]

Hi

As we know the "USB-C Digital AV Multiport Adapter" does not! allow the Macbook 12" 2017 to output 4K@60Hz because HDMI is limited to version 1.4, so only 4K@30Hz.

Goal: Power the Macbook and!! output 4k@60Hz

Can an adapter with Displayport + UBS-C (power delivery) allow the Macbook 12" 2017 to output 4k@60Hz and deliver power?
->

Dell USB-C zu (HDMI, DP, 18 cm)

Mit diesem Dell USB-C-an-HDMI-/DisplayPort-Adapter mit Stromdurchführung verwandeln Sie Ihren mit wenigen Anschlüssen ausgestatteten USB-C-Laptop in eine mobile Workstation. Am USB-C-Anschluss können Sie Ihren Laptop mit bis zu 90 W aufladen und gleichzeitig ein externes 4K-HDR-Display bei 60 Hz...

www.galaxus.ch

 

[BeatCrazy]

I have the MacBook 12" 2017, and get 4K @ 60Hz and power, via USB-C, directly into my LG 4K monitor.

What display are you using?

 

[Mcrumors David]

-> Any standard 4K display with a Display-Port input.
("Normal" displays don't offer UBS-C direct IO ..and there is a hefty premium for that)

 

[BeatCrazy]

H

-> Any standard 4K display with a Display-Port input.
("Normal" displays don't offer UBS-C direct IO ..and there is a hefty premium for that)

I think you are asking for something that doesn’t exist.
Either use USB-C for everything, or DP along with a power supply.

 

[Mcrumors David]

I'm only asking if above adapter (the Dell one) works with the Macbook 12" - powering it and driving a 4k@60hz display through display port🤷‍♀️

 

[gjesp]

I think what you need is a docking hub that has DC-in. I.e something like those you see in this article: https://arstechnica.com/features/20...ricky-world-of-thunderbolt-3-and-usb-c-docks/

This will power your Macbook and at the same time provide 4k display when connected to TB/HDMI/DP port on the hub

 

[Mcrumors David]

Can you explain why the adapter I posted does not do the trick? https://www.galaxus.ch/de/s1/product/dell-usb-c-zu-650cm-data-video-adapter-12695879

Also -> Why carry a hub (+ power) when I only need power + display port?

 

[gjesp]

I take it back. Just looked up the specs on Dells website and from what I can tell it does support power pass-through and it even supports up to 90W so I don't see any reason why it should not work. Most adapters will only power peripherals that are connected to it so it is not pass-through in that sense, but it does not seem to be the case here.

Let us know how it works if you end up bying it

"Turn your port-scarce USB-C notebook to a mobile workstation with this Dell USB-C to HDMI/ DisplayPort adapter that comes with power pass-through. Its USB-C pass-through allows you to charge your laptop up to 90W while connecting to an external 4K HDR display at 60Hz simultaneously without compromising on screen performance."

Dell Adapter USB-C to HDMI/DP with Power Pass-Through | Dell Ireland

Get to work faster with Dell Combo Adapter with Power Pass-Through, connects to HDMI or display port provides easy portability and uncompromise productivity.

www.dell.com

https://i.dell.com/is/image/DellContent//content/dam/global-site-design/product_images/peripherals/output_devices/dell/adapters/zeus-dell-_combo_adpater_usb-c_to_hdmidp/pdp/dell_usb-c_to_hdmi_displayport_7_l.jpg?fmt=jpg

 

[mk313]

I looked into this a little bit ago as I was contemplating buying a 4K monitor. I ended up going in another direction, but from the research I did, you can actually do what you are asking, but there are only certain adapters that allow it. I THINK this is the one that was recommended, but I can't say for sure: USB C to Mini DisplayPort Adapter UPTab (4K@60Hz) USB-C/Thunderbolt 3 to MDP Adapter with Power Port for New iPad Pro 2018, MacBook Pro 2016-2019, Galaxy S10 and More USB Type-C Devices (Silver)