... , plug and play 3. Single chip(ASIC) USB port to serial port communication,Automatic detective serial signal rate4. ... or 2.0, EIA RS232 standard5. USB full-speed to 12Mbps6. LED indication: RXD/TXD(RS-232)Specifications: USBCompliance: USB1. ... None, Even, Odd, Space, MarkFlow Control: RTS/CTS, XON/XOFFFIFO: 128 bytesSerial SignalsRS-232: TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI, GNDDriver SupportOperating ...