3X(Cavo adattatore convertitore seriale USB 2.0 a RS485 RS422 per - Chip 107388
Serial Protocol: RS485 / RS422. Specification: USB 2.0; EIA/ RS485 and RS422 standard. 4 Kinds of Working Modes: Asynchronous. 3X(Specific The USB end must be connected to PC or. 1 x USB to Serial Converter Cord. ).