# Device: BayCom KISS Serial USB or async serial BayCom firmware TNC. Uses `kiss-serial` backend — no kernel `baycom_ser_fdx`, no **bcpr** SER12 path. HyBBX `[transport.baycom1]` with `backend=kiss`, `device=/dev/ttyUSB0`. See [docs/BAYCOM.md](../../../docs/BAYCOM.md) (KISS vs BayCom/based) and [docs/PLUGINS-DEVICE-MODEL.md](../../../docs/PLUGINS-DEVICE-MODEL.md).