My raspberry pi crashed because of a damaged wall plug.
Since that my raspberry doesnt boot correctly, it seems to be stuck at
cdc_atm 1-1.2:1.0: ttyACM0: USB ACM device
which is the conbee 2 stick.
The raspberry is connected via RJ45 but its not visible in my fritz box.
Do you have any tipps for me to get this one up and running?
does it start without the conbee?
If your pi crashed following an issue with power, there’s a very high chance your SD card might be corrupted…
Thanks for your reply!
No, it doesnt start without conbee stick, it’s stuck when it reached USB ports.
I installed home assistant on a new SD, no problems so far.
I think, one of the last updates broke my SD. I cant read, write, delete or format the partitions on that SD, tried on ubuntu and manjaro with testdisk and gparted.
Trying to purge the SD right now, hopefully it’s not gone, it’s a sandisk extreme 
power support quality has a massive influence on the sd card. Make sure you have a powerful enough power supply and of good quality