If the built-in 2.5 GbE LAN port is not enough for someone (it is worth updating the drivers => https://bbs.bee-link.com/d/4093-beelink-ser8-8845hs-slow-lan-after-clean-install-windows-11-fix ), you can always consider using the USB-C port on the back of the computer case. After all, it is USB4.
In my case, I used the OWC 10GbE card on TB3 - it works without a problem (on Windows, you need to install drivers).
We have 10GbE in SER8 :)
For more details including photos (also thermal) please refer to the post on Reddit => click
