These graphics adapters from Plugable are the first in the industry to offer 2 display outputs using the DisplayLink DL-6950 chipset

4K 60Hz HDMI-Featuring 2x HDMI 2.0 ports, connect up to 2 displays at up to 4K 60Hz, through a single USB 3.0 port.

Long winded response but hope this makes sense and is helpful to you and others who are having same issue. I have ordered this cable and will know by Saturday if it works. et Voila:Ī: CHOETECH USB-C to DisplayPort Adapter Cable (4ft/1.2m) for 2017 iMac, 2017 MacBook Pro, 2016 MacB… Then I went to Amazon and searched for ' USB-C to DisplayPort adapter'. The Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter doesn't support this display.' Sure wish the Apple Clueless 'Genius' who sold me the Apple adapter at $50 knew this.

Then it says ' This display requires a third-party USB-C to DisplayPort adapter or USB-C to HDMI 2.0 adapter. In this support article they reference ' 4K display that supports 4K at 60Hz' Then, this morning found this article in today's NYT:Įxpanding Your View Beyond the Laptop Screen - The New York TimesĬonnect external displays to MacBook Pro (2016) - Apple Support After being passed around 4 times, spent total 1.75 hours with no good result.

Spoke with apple support who didn't have a clue (at least it only took half hour). I have been successfully using a Dell P2715Q 4K 27 inch monitor with my 2015 MacBookPro via Thunderbolt 2 to Display port. Just got my new iMac with same config as yours (except less RAM) and the Thunderbolt 3 (USB-C) to Thunderbolt 2 adapter. The specs for the iMac - 4.2 GHz Core i7, 64GB RAM, Radeon Pro 580 It appears to be an issue with the iMac itself, but I thought I'd post here in case this has happened to someone else and there's a fix, or I'm doing something wrong. To be clear, I have only plugged in each monitor separately and never both at the same time. I have tried restarting as well as just shutting the iMac off before plugging the monitor in, even though I know I shouldn't have to. The weird part is that he was using both monitors with his 2016 MacBook Pro (has since sold), and they worked fine. I also connected it to a ViewSonic 4K monitor through the Display Port using a Display Port to Thunderbolt 3 adapter.

I tried a different cable (Belkin Thunderbolt 3) with no luck. It worked for a few minutes, and then it started flickering until it just blacked out. I first tried connecting an LG Ultra Fine 5K display using the supplied cable. I'm trying to set up a new 2017 iMac for a friend, and I'm having trouble connecting an external display to it.

Mac hdmi adapter rad