CC2531 with external antenna - Hardware - Zigbee2mqtt
CC2531 ANTENNA Zigbee2MQTT ROUTER Firmware + 3D Print Case BLACK | eBay
DIY] Configurable router firmware for CC2531 dongle – Zigbee Hobbyist. Rock Pi 4 SBC
Replacing Aqara Gateway: CC2531 & CC2538 for a homebrew Zigbee network – Necromancer's notes
CC2531 - ZigBee - Mit Router oder Coordinator Firmware - Smart8266🌐
ITEAD of Sonoff fame now sells a very inexpensive Zigbee USB dongle that should work out-of-the-box with both Zigbee2mqtt and the ZHA integration - Zigbee - Home Assistant Community
CC2531 is not getting detected after flashing. - Zigbee & Thread forum - Zigbee & Thread - TI E2E support forums