Add serial capacity where it matters most: inside the system. The SIIG LB-S00114-S1 installs in an available PCI Express slot and delivers four RS-232 ports, making it a practical choice for servers, workstations, and control systems that still depend on serial peripherals. With support for data transfer rates up to 115.2 Kbps, this card is designed for the communication demands of legacy equipment rather than consumer-grade convenience. The 256-byte FIFO buffer helps smooth data flow in multitasking environments, where multiple serial sessions or background processes can otherwise create bottlenecks. For infrastructure teams, the value is straightforward. A single expansion card can replace a tangle of external adapters, reduce port contention, and keep serial connectivity inside the chassis where it belongs. That makes it easier to support point-of-sale systems, industrial controllers, lab instruments, and other devices that still rely on RS-232. When uptime and port density matter, a PCIe card is the cleaner long-term answer.