Hi,
I've installed the latest Home Assistant OS in my RevPi Connect 5 (Item #100414).
This model has build-it RS485 and CANbus.

HA Core 2026.5.1
HA OS 17.3
Linux 6.12.75-haos-raspi

It all works fine except RS485. The device is not showing up in the /dev folder. CANbus and other IO is not tested ...