This product is a PCI bus-supported board designed for extending RS232C compatible serial communication functionality on your PC. The < COM-2(PCI)H > has two RS-232C communication ports. With a 128byte built-in FIFO buffer for transmission and reception of each channel, the product supports a baud rate of up to 921,600bps. Windows / Linux compatible driver software is available that can be used just like a COM port on a PC. This product supports CONTEC-defined driver library “API-PAC(W32)” that provide local routines. The COM-2(PCI)H board is backward compatible with the CONTEC COM-2(PCI) board. The COM-2(PCI)H can therefore replace the COM-2(PCI) in an existing system.