I have my MR4U powered via POE and working Zigbee (Radio 1) via Z2M and Thread (Radio 2). But when I connect an Aeotec Z-wave Gen 5 USB dongle (USB A->USB C adapter in between) the MR4U stops responding. It works again as soon as the USB stick is disconnected.
I have USB to Ethernet passthrough enabled and have also tried Autoboot both on and off. I’m running SLZB-OS 3.1.4 (stable). Should I try one of the dev versions, or is there anything else I could test?