I have recently bought an Argon One M2 case and installed a SSD in it. I have a wierd issue with Deconz/ConBee II I can’t get my head around.
I’ve copied my existing SD card to the SSD using dd, as far as I’m aware it’s an exact copy. However when I boot the pi off the SSD, everything works except the Zigbee devices. Looking at the Deconz mesh, I see no green lines. If I switch back to the SD card, everything comes up within a few minutes.
Add a USB extension cable to move the Conbee2 Zigbee radio away from the USB ports. The USB SSD creates a lot of RF noise. This is a very common issue when running a RPi off of a USB drive.