... kinds of OS PND,MDT support The USB to Dual RS232 converter/adapter is a port-powered USB to dual RS-232 ... ,600 bps• Internal 128/385 Byte Tx/Rx Buffers• Standard DB9/M RS232 Connector;• RS422/485 with terminals marked• Full Modem Support ... , Mac, and Linux. Industrial Grade, FTDI solution,USB to Dual RS232 converter / adapter /serial cable, applicable to PND