When we last posted about the Bourge Design Arc Hub, we noted that some people were not able to achieve a 60 Hz refresh rate when connecting their 4K monitor to the mini-DisplayPort, specifically when using the 2016/2017 Apple MacBook Pro.
We received our Arc Hub today and immediately tested with a mini-DisplayPort cable that’s affordable and has very good reviews. Unfortunately although the cable itself should support 4K@60Hz, the hub capped the resolution at 2560×1440. This is actually even worse than we expected! We hooked up our monitor (Samsung U28E590DS) via HDMI and got 4K@30Hz which is not ideal but acceptable for incidental usage.
Known Issue: Not being able to achieve 4K@60hz via MDP when using a MacBook Pro. Will this be fixed?: Our engineers are throughly researching and examining the issue. The current prognosis is that it may be a conflict between the firmware in the Arc Hub and MacOS that is preventing 4K@60hz from appearing. We will update this page with more info as it comes our way.
Besides this, the sales page has a Tech Specs section and it no longer lists 4K@60Hz as a feature. Another source of documentation is the Indiegogo page because the Arc Hub was a crowdfunded project. That project page still lists: “The Mini DisplayPort outputs 4K@60hz” but we suspect this is old copy and will be removed as well.
Firstly it’s a shame for buyers, because the Arc Hub was sold to many customers as having this specific feature. And they’re not getting what they paid for. But secondly, it’s a shame for the whole USB-C ecosystem because the Arc Hub was the only hub that delivered 4K@60Hz out of the box.
Previous blog: Bourge Design Arc Hub not reliably doing 4K@60Hz
Also check out our best USB-C hubs & docks!