seems to work well for my modest needs. you can either make the mouse move between screens using Ctrl or another key or make it freely roam ...without borders
allows drag and drop of files, shared clipboard etc
[0] https://www.microsoft.com/en-us/download/details.aspx?id=354...
I've tried a few software solutions over the years but they all seem to run into issues eventually.
Doesn't work on Linux.
The keyboard is great, but you have to physically pick up the mouse and press a button on the bottom.
It's way easier to just have 2 or 3 mice at $100.
Switching to bluetooth has a seconds long delay. Regular wireless is instant.
Android apps (not the YouTube app, but definitely jellyfin and some others) tend to shit themselves when you connect the MX keys via Bluetooth.
The button being on the bottom of the mouse is the absolute dumbest thing that they did with this setup for sure.