RTL88x2bu [AC1200 Techkey] WiFi dongle

[jedaa]

My system does not recognise my new dual band USB WiFi dongle (ID 0bda:b812 Realtek Semiconductor Corp. RTL88x2bu [AC1200 Techkey]) even though my research reveals that the 88x2bu chip is supported from kernel 6.2 onwards.

I am just a simple home user without technical skills ... would be most appreciative if somebody could help out.

Thanks
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Operating System: Manjaro Linux
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.9
Kernel Version: 6.2.16-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-2500 CPU @ 3.30GHz
Memory: 15.5 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 650 Ti/PCIe/SSE2