... needed, plug and play 3. Single chip(ASIC) USB port to serial port communication,Automatic detective serial signal rate4. Accord ... USB1.1 or 2.0, EIA RS232 standard5. USB full-speed to 12Mbps6. LED indication: RXD/TXD(RS-232)Specifications: ... temperature: -25 to 85°C Humidity: Relative humidity 5% to 95% Power requirementsNo power supply needed, powered from USB Consumption: Static consumption ...