ConBee III (ConBee 3) from Dresden-Elektronik based on Silicon Labs EFR32MG21 +20dBm radio SoC/MCU - Zigbee - Home Assistant Community

ITEAD Zigbee 3.0 dongle powered by Silicon Labs EFR32MG21 wireless MCU Sells for $6.99

ITead's “Sonoff Zigbee 3.0 USB Dongle Plus V2” (model ZBDongle-E) based on Silicon Labs EFR32MG21 +20dBm radio SoC/MCU - Zigbee - Home Assistant Community

ITead's “Sonoff Zigbee 3.0 USB Dongle Plus V2” (model ZBDongle-E) based on Silicon Labs EFR32MG21 +20dBm radio SoC/MCU - #96 by flaxe - Zigbee - Home Assistant Community

Supported Adapters

Silicon Labs EFR32MG21 Zigbee 3.0 Universal Gateway USB Dongle,ZHA, EZSP, NCP, Home Assistant - AliExpress

SMLIGHT SLZB-07 Zigbee Coordinator USB dongle based on Silicon Labs EFR32MG21 +20dBm radio SoC/MCU - $9.98 launch promotional price + shipping (otherwise $14.99) - Zigbee - Home Assistant Community

Phoscon ConBee II - Universal Zigbee 3.0 USB Gateway, incl. deCONZ & Phoscon App, Home Automation, Home Assistant, ioBroker, Zigbee2MQTT : Electronics

Advice on Zigbee range extending - #146 by Hedda - Zigbee - Home Assistant Community

The Conbee III is officially released : r/homeassistant

Conbee III - Discussions Générales - Communauté Jeedom

REQUEST] Support for Silicon Labs EFR32 (Mighty Gecko family) based Zigbee radio adapters using EZSP serial protocols? · Issue #168 · Koenkk/zigbee-herdsman · GitHub