USB2.0 USB 2.0 to RS485 RS422 RS-485 RS-422 Serial Port Device Adapter Converter Cable, FTDI FT232 FT232R FT232RL Chipset FTDI FT232R chipset. More stronger and more reliable. Real USB 2.0 specification compliance. TIA/EIA RS-485/RS-422 standard compliance. Support baud rate from 300bps to 912.6Kbps. Transmit distance reach up to 1219m.