The Sonoff ZBDongle-E uses a Silicon Labs EFR32MG21 radio and an external whip antenna, delivering reliable Zigbee coordination (fast pairing, stable routing) and easy Home Assistant integration (ZHA, Zigbee2MQTT). It’s a strong, low-power USB coordinator for host-based setups, but it’s a USB stick (needs a host), larger with the antenna attached, and doesn’t offer the extra headroom or Thread/USB versatility of the MG24-based Sonoff models.
For Home Assistant or Zigbee2MQTT users who want a proven, host-based Zigbee coordinator; avoid if you need a standalone hub or Thread+Zigbee simultaneous operation.
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