... CPU ARM Dram 16MB FLASH 4MB Serial Interface 1 Port of DB9 Serial speed 75bps to 230Kbps ... , software Xon/Xoff Signals: RS232: RS232: Rx, Tx, RTS, CTS, DTR, DSR, DCD, GND RS422: ... Rx+, Rx-, Tx+, Tx- RS485: Data+, Data- Modem controls: DTR/DSR, DCD ... run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); 1-port RS-232/422/485 Serial Device Server