... . Features: 1. USB to 4-port RS-485/422 converters2. Single chip(ASIC) USB port to serial port communication3. Support Windows98/ME and ... power input5. No IRQ, I/O Address6. Support USB2.0, baud rate can reach up to 12Mbps7. 15KV ESD protectionSpecifications ... :USBCompliance: USB1.1/2.0 compliantUSB signal: VCC, DATA+,DATA-,GNDSpeed: 480Mbps(high-speed), ...