The Sonoff ZBDongle-E is a powerful Zigbee 3.0 gateway designed for open-source platforms. It features an EFR32MG21 main chip and a CH9102F serial chip, which operate faster and more efficiently than the CP2102N. The dongle supports up to 32 devices or as many as your platform allows. It comes pre-installed with the Ember-ZNet protocol instead of Z-Stack, as well as the ZigBee EZNET 6.10.3 coordinator software, and offers support for OpenHab and Home Assistant, along with Zigbee2MQTT compatibility with BASICZBR3, S31 Lite zb, SNZB01, SNZB02, and SNZB03 devices.