Earlier quoted context omitted.
I looked into WiFi cards a year ago for a computer build, and iirc you can get a very high end Intel NIC for Atheros also has good support for Linux. I just looked it up, and Intel's best chip the AC 9560, with 2x2 1.73 Gbps WiFi and Bluetooth 5.0 is It's an easy swap on desktops and on most laptops too.
How can you swap anything aside from disk or RAM in modern laptops? Isn't everything soldered these days - including RAM in some cases ?
Unfortunately not the sp4: https://www.ifixit.com/Teardown/Microsoft+Surface+Pro+4+Tear...