Bluetooth needs PIN Codes for all devices

Hello,
I hope my question is correct in this section.
I have disabled the internal Bluetooth of my notebook and connected a USB Bluetooth dongle. Now should always specify a PIN code when connecting. However, I have no codes for my headphones (Marshall Minor 3) or keyboard (Keychron K8). With the internal Bluetooth I did not have this problem.
Do I have to set up anything or set a permission so that the Bluetooth dongle works correctly and allows connections without PIN code?

Thanks for a hint or help
Mr. Psyc

inxi:
CPU: quad core Intel Core i7-8550U (-MT MCP-) speed/min/max: 1400/400/4000 MHz
Kernel: 6.1.12-1-MANJARO x86_64 Up: 1h 53m Mem: 4702.7/15758.1 MiB (29.8%)
Storage: 476.94 GiB (57.4% used) Procs: 307 Shell: Bash inxi: 3.3.25

lsusb:
Bus 001 Device 004: ID 0bda:8771 Realtek Semiconductor Corp. Bluetooth Radio