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View Full Version : Single Dell Ultrawide connected to PC and MacBook Pro


Cokoo1
04-13-2025, 06:13 PM
I am having a terrible time trying to connect all my devices so hoping someone here can point me in the right direction...

I have a*Dell U4025QW (https://www.dell.com/en-us/shop/dell-ultrasharp-40-curved-thunderbolt-hub-monitor-u4025qw/apd/210-bmdp/monitors-monitor-accessories) which I use with my personal desktop pc (Alienware R15 Intel 13900KF & RTX 4090 (https://www.dell.com/support/manuals/en-us/alienware-aurora-r15-desktop/alienware-aurora-r15-setup-and-specifications/ports-and-connectors?guid=guid-951cb053-04ae-4653-8341-f4cba6f9ea81&lang=en-us)),*a humanscale m/connect 3 pro dock (https://www.humanscale.com/products/mpower-charging-hub-configurator.cfm?configuration=TM33C81WNA)*monitor arm combo, and a 2021 MacBook pro M1. Trying to connect all of this together as efficiently as possible with minimum wires/clutter.

The Alienware is my personal pc that I use primarily and want to make sure it is displaying as 5K 120hz on the monitor - the macbook is my work laptop that I plug in to use on days I WFH. I have one wired keyboard + a wireless mouse (both Alienware if that matters) that I'd like to be able to share b/w both computers using the Dell monitor’s KVM.

Lastly, preference is to utilize all the m/connect dock inputs under the desk first and then anything else plugged into the monitor ports for ease of cable management. The mconnect has a single usb c cable that plugs into the MacBook and I would like to keep that a single connection so I am not maneuvering multiple wires every time I take the MacBook to work.

Is the above setup possible? What additional cables / hubs / adapters do I need and in what order should the devices be connected? I have scoured Google, reddit, dell and Humanscale support with no luck. I was told I need a display link compatible adapter if my computers don’t have alt DisplayPort - this is where one of the support people suggested this startech adapter (https://a.co/d/grc7ADd) but, without any clarity on where this even connects.

Any help appreciated!!

ania98
04-25-2025, 01:58 PM
Yeah, you can totally do this. Alienware should go DisplayPort → Dell directly for full 5K120Hz. MacBook goes USB-C into m/connect dock. Keyboard and mouse should plug into the Dell monitor for KVM to switch cleanly.

Just be careful – not all USB-C cables handle full DP Alt Mode. Get a good brand one. ;) (https://foroom.net.pl/)