UTEK UT-201 Port-powered RS-232 to RS-485 Mini-size Mini-size RS232 DB9 female port to RS485 DB9 male connector Hot-swappable and plug & play, port-powered over RS232 RS485 Unique serial charge pump drive technology, TXD/RXD/GND communication The range of baud rate: 300bps-115.2Kbps Working Mode: asynchronous half-duplex (RS485)