... Linux.FEATURES• Industrial grade design, adds two RS-232 ports to USB port, compatible with MDT,PND.• FTDI 232BL single chip ... , DCD, RI, and GND.• Data transfer rates from 300 Bps to 921,600 bps• Internal 128/385 Byte Tx/Rx Buffers ... ), Win CE, Mac, and Linux. Industrial Grade, FTDI solution,USB to Dual RS232 converter / adapter /serial cable, applicable to PND