Serial Actress Lakshmi Pics more. • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • USB to RS-232 Converter Cable The USB to RS-232 (9-pin Serial Port) Converter is an intelligent, stackable expansion module that allows connection of any GPS unit to the USB port of a PC when used with the appropriate PC serial interface cable. For use with GARMIN's eMap or eTrex series, either the or is also required. Other GARMIN units require the or to connect the GPS to the Converter Cable. Magellan units require either the. The Converter connects to a PC USB port or USB hub via the USB port, providing one RS-232 (male) serial port. The converter allows connectivity for GPS units to newer PCs that do not have serial ports and will support transfer rates from 1200 to 115.2 baud. The Converter DOES NOT provide USB-speed data transfer rates.