The National Instruments PCI-8430/8 is a robust RS232 serial interface device designed for high-performance data communication. This interface features 8 ports and operates at a maximum baud rate of 1000 kbits/s, allowing for efficient transfer rates in various applications. Utilizing a 68-pin SCSI connector, the PCI-8430/8 includes a dual FIFO architecture that supports Direct Memory Access (DMA) for enhanced data throughput while minimizing CPU load. The FIFO buffer size is 128 bytes, facilitating efficient data handling and processing. With a power requirement of +5 VDC at a typical current draw of 1.3 A and a maximum of 1.9 A, the device measures 4.2 x 5.7 inches and weighs 0.19 lb. Designed for integration in modern computing environments, the PCI-8430/8 supports both DMA and interrupt-driven data transfers, optimizing data flow from the device to the host machine's memory. This product is supported by National Instruments' NI-Serial driver software, and comprehensive user and maintenance manuals are available for download. Although declared as mature, the PCI-8430/8 remains available for purchase and repair through Apex Waves, ensuring ongoing support and reliability for professional applications.