The National Instruments PCMCIA-232/4 (Part Number: 777379-04) is a robust 4-port serial interface device designed to facilitate seamless communication between notebook or desktop computers and various instruments or devices equipped with serial ports. Fully compliant with the RS232 standard, the PCMCIA-232/4 ensures easy connectivity and supports hot-swapping, allowing users to install or remove the card without needing to power down the host machine. This feature greatly contributes to efficient operation in control and monitoring systems, making it suitable for various field applications.

The device offers two 16-byte FIFO buffers—one for transmission and one for reception—providing flexibility in data handling. Users can configure FIFO settings through the comprehensive Windows-based driver, and if desired, can disable the buffers entirely. Additionally, the PCMCIA-232/4 allows for customization of resource settings directly via a resource configuration dialog box, enabling adjustments to the base I/O address and IRQ settings. The device is compatible with a DSUB-9 connector and typically draws 60 mA of current, with a maximum current of 200 mA. With a warranty of 2-3 years and detailed user and maintenance manuals available for download, the PCMCIA-232/4 is an essential component for reliable serial communication. For pricing information, please contact a sales representative.