... port (USB 2.0 – backward compatible) into two RS-232C ports. The unit uses the latest FTDI chipset and ... , 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, ... FTDI solution,USB to Dual RS232 converter / adapter /serial cable, applicable to PND