... converter/adapter is a port-powered USB to dual RS-232 converter that can be used to convert any standard USB ... , Mac, and Linux.FEATURES• Industrial grade design, adds two RS-232 ports to USB port, compatible with MDT,PND.• FTDI 232BL ... single chip solution• RS-232 data & signals: TX, RX, RTS, CTS, DTR, DSR, DCD, RI ...