**High Performance:** Complies with PCI2.1 specifications and supports 32-bit PCI bus. Enjoy plug-and-play functionality with automatic I/O address assignment. **Multi-Serial Card Support:** One card can support multiple multi-serial cards, enhancing your system's connectivity. **Flexible Data Bits:** Supports data bit lengths of 4, 5, 6, 7, or 8 bytes. **Reliable Verification:** Features NONE, EVEN, and SPACE verification options for data integrity. **Versatile Stop Bit Lengths:** Choose from 1, 1.5, or 2 stop bit lengths. **Advanced Flow Control:** Offers No, Hardware, and Xon/Xoff data flow control modes. **Broad OS Compatibility:** Supports WINDOWS 2000/2003/XP. **Blazing Fast Transfer:** Achieves a maximum data transfer rate of up to 1M/S. **Easy Installation:** 1. Power off your computer and connected devices. 2. Open the case, insert the card into an unused PCI slot, and secure it. 3. Close the case and connect the wires to the PCI to R232 expansion card. 4. Power on your computer; the driver will install automatically. **Important Notes:** * During computer self-test, the system will recognize the PCI TO R232 expansion card as a new device. * Each PCI TO R232 expansion card occupies one interrupt, automatically assigned by the system. The port sequence number is determined by the PCI slot position. * In WINDOWS, if no similar products are installed, the port name usually starts from COM3, depending on the number of motherboard ports. * When replacing with a new card and driver in WINDOWS, remove the original card from the multifunction card settings. * **Crucially, never insert or remove the card or cable connections while the computer is powered on.** **Package Contents:** 1 x RS232 Expansion Card 1 x CD Driver