This product is a PCI bus-supported board designed for extending RS-422A/485 compatible serial communication functionality on your PC. The < COM-4PD-PE > has four RS-422A/485-standard serial ports. Higher noise-resistant models with isolation between channels and between PC and bus line as well as a surge protection
circuit for 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.