ESPHome has appeared

Hi all,
I have ESPHome Integration appear on my HA Devices and Services that needs configuring.

I have just installed a Sonoff Zigbee2MQTT dongle in so I’m suspecting it’s something to do with that perhaps I don’t really know.

However: I would like to know how to configure it. It has Port 6053 already configured but what do I put as host? I’m guessing an IP address but how do I know what IP address?

Any help please…

Bob