PCI to 4 Ports RS232 Serial Card, 64 Bit, 2000 V Surge Protection,UK Chip Features:Plug and PlayAdopt RS232 serial port expansion ... addressASIC design, high stability, low repair rateTransmission rate up to 921.6 KBPSMore than 900 KBPS data throughput, top efficiency ... controlDriver supports Windows/Linux/Unix series operating system PCI to 4 Ports RS232 Serial Card, 64 Bit, 2000 V Surge Protection,UK ...