Not connected. WebUSB talks to the vendor (0xFF) interface (default filter VID 0x1209); Web Serial to the CDC port, where the device console and the protocol share one stream.
This browser supports neither WebUSB nor Web Serial. Use a Chromium-based
browser (Chrome / Edge / Opera) on a secure origin (https, localhost or file://).
Link lost — the desktop is a stale snapshot until the device reconnects