Dear Team,
There are some questions about wheather nRF52840 dongle work as BLE5.x sniffer or not in Nordic Q&A.
And all answer are not.
I found update of nRF sniffer and it had "Updated Supported devices"
https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_sniffer_ble%2FUG%2Fsniffer_ble%2Fintro.html
Now nRF52840 dongle works as BLE5.x sniffer ?
Best regards.