This is probably the best explanation available of this: https://www.bigmessowires.com/2019/05/19/explaining-4k-60hz-...
Re:16-inch MacBook Pro
by proverbialbunny on Thursday November 14, 2019 @03:13PM
(#21538931)
This explains a lot. Thanks!
Hopefully USB 4 will make it possible.
You have a dock, an adapter, a breakout box or whatever the cool kids are calling it.
A USB hub is just one USB port in and N out. There is no such thing for USB-c.
You can't even chain those adapters. The USB-c 'in' port that you plug power into? No data on that line. Just power.
And some of those adapters send the wrong voltage to USB-2 devices. Had a hell of a time with my keyboard and mouse until I started plugging the power directly into the computer.
A quick google search returns https://satechi.net/collections/usb-type-c/products/type-c-m... which isn't what I have, but it's more of the same.
My complaint about usb-c hubs, when I was looking for one a year ago is I couldn't find one that did 4k60, gigabit ethernet, and 2 or more usb 3.0 plugs. This has led me to plugging in two cables instead of one for years. If my monitor had a gigabit ethernet plug, I'd be set, because it outputs a bunch of usb (2) ports.