What You'll Need

Step-by-Step Setup

Connect via extension cable: Use a USB extension cable to position the ConBee II away from interference sources (USB 3.0, SSD drives).
Plug in the gateway: Connect to your server or Raspberry Pi. The LED will glow green when powered.
Install deCONZ (recommended): Download from Phoscon's website or install via apt: "sudo apt install deconz"
Access Phoscon app: Open a web browser and go to http://your-ip-address/pwa (or use the Phoscon app).
Create gateway: Follow the setup wizard to create a new Zigbee network.
Set gateway password: Create a secure password for the gateway interface.
For ZHA instead: In Home Assistant, go to Settings → Devices & Services → Add Integration → ZHA. Select ConBee II when prompted.
For Zigbee2MQTT: Configure the serial port and set adapter type to "deconz" in configuration.yaml.
Add devices: Click "Add new device" in your chosen interface, then put Zigbee devices in pairing mode.

Not detected: Check USB connection. Verify with "lsusb" command (should show Dresden Elektronik). Use USB 2.0 port or extension cable.
LED meanings: Green = powered and normal. Blinking green = transmitting. Red = firmware update mode.
Devices not pairing: Reset devices before pairing. Move closer to ConBee during initial pair. Check device compatibility list.
Firmware update: Use deCONZ GUI or GCFFlasher tool. Download firmware from Phoscon. Backup before updating.
Zigbee network issues: Check channel doesn't overlap with Wi-Fi. Avoid placing near USB 3.0 hubs. Add router devices for mesh coverage.