... Industrial Grade, reliable applicable to kinds of OS PND,MDT support The USB to Dual RS232 converter/adapter ... Industrial grade design, adds two RS-232 ports to USB port, compatible with MDT,PND.• FTDI ... and GND.• Data transfer rates from 300 Bps to 921,600 bps• Internal 128/385 Byte Tx/ ... and Linux. Industrial Grade, FTDI solution,USB to Dual RS232 converter / adapter /serial cable, applicable to PND