At a minimum, eARC requires that both an audio device and its connected HDMI port support HDMI 2.1. If you're unsure, check your audio gear's specifications, and connect it to the port marked "eARC" ...
Even better, the Baseus 11-in-1 docking station is totally plug-and-play, so you don't have to worry about drivers or any other software. As far as compatibility, I've tried this with Linux, Mac OS, ...
The Lenovo LOQ Tower 17IRR9 is a solid little machine capable of handling most workloads. And the best part is that it's fairly inexpensive for the specs.