The PCIe-8433/2 module is a high-performance, industrial-grade interface for high-speed communication with RS-485 and RS-422 devices, which also offers port-to-port isolation. The module offers data transfers via the high-speed DMA interface, multi-threading and multi-processor support. Users can choose between 4- and 2-wire transceiver modes for full- and half-duplex communication. NI's serial ports appear as standard COM ports, ensuring compatibility with programs that use serial communication.