There are many topics on the forum asking about a key for Windows 11.
In my case, the key was not required, the system was activated with a so-called digital license.
From the pre-installed system, I created a new official Microsoft installation media on a pendrive. I started the installation, installed it, the network worked immediately, the system activated itself. No complications.
Model: Beelink SER8 AMD Ryzen 7 8845HS × 1 32GB+1TB / Frost Silver / EU
FW: SER8PC5C8V29 08/14/2024 15:22:13
Purchase date (on the Beelink website): 04.01.2025
Package receipt date: 13.01.2025
Preinstalled system version: 10.0.26100 (Windows 11 Pro) => 24H2
Interesting fact: the date of the last Windows Update search visible in the system => 6/11/2024, 8:13 AM :)
After installing the system, and fully updating with Windows Update, there were 5 unrecognized devices:
PCI\VEN_1022&DEV_15E2&SUBSYS_15E21022&REV_63
PCI\VEN_1022&DEV_15C7&SUBSYS_15C71022&REV_00
ACPI\VEN_AMDI&DEV_0052
PCI\VEN_1022&DEV_14EC&SUBSYS_14EC1022&REV_00
PCI\VEN_1022&DEV_14EC&SUBSYS_14EC1022&REV_00
The solution to the problem was to install two driver packages from AMD:
AMD Software:Adrenalin Edition v24.12.1 https://www.amd.com/en/support/downloads/drivers.html/processors/ryzen/ryzen-8000-series/amd-ryzen-7-8845hs.html
+
AMD Chipset Drivers v6.10.17.152 https://www.amd.com/en/support/downloads/drivers.html/chipsets/laptop-chipsets/amd-ryzen-and-athlon-mobile-chipset.html
Thanks to this, we have a clean system, from official Microsoft media, and with AMD drivers.
It just works :)