StarTech PEX4S553B 4 Port PCI RS232 Serial Adapter Card - Single-Lane PCI Express

StarTech PEX4S553B

4 Port PCI RS232 Serial Adapter Card Single-Lane PCI Express

The StarTech PEX4S553B is a versatile **4-port PCI Express RS232 Serial Adapter Card**. It is designed to add four high-speed RS232 serial ports to a desktop computer through a single **PCI Express (PCIe) slot**. This card is an essential component for connecting and controlling legacy or industrial serial devices, such as bar-code scanners, point-of-sale terminals, serial printers, and various industrial automation equipment. It provides a reliable and high-performance solution for systems that lack built-in serial ports or require additional ones.

The PEX4S553B uses a native single-chip design, which means it provides a single-lane PCIe connection, offering maximum performance and reliability while reducing the CPU load. This ensures that the serial ports can handle demanding applications without causing a slowdown in your system. The card is a great choice for system builders and IT professionals who need a dependable and scalable way to integrate serial communication into modern PCs.

Features :

The PEX4S553B is built for both performance and reliability. It features **four high-speed 16950 UART-based ports**, which are capable of data transfer rates up to **921.6 Kbps**. The card's single-chip design eliminates the need for a bridge chip, which provides a more efficient and reliable serial communication pathway. Each port is fully independent, and the card's architecture ensures that it can support multiple devices simultaneously without performance degradation. It includes both full and low-profile brackets, allowing for easy installation in various computer chassis sizes, including standard desktops and slimline PCs. The card is compatible with a wide range of operating systems, including Windows and Linux, and supports standard serial features like parity, stop bits, and flow control.

Advanced Options :

For IT professionals and industrial automation engineers, the **StarTech** PEX4S553B offers a strategic advantage. Its reliable, native PCIe connectivity ensures that you can confidently integrate legacy serial devices into modern computer systems. The ability to add multiple ports on a single card simplifies system design and reduces the number of PCIe slots required. The included low-profile bracket is a major benefit for small form factor PCs often used in industrial or embedded systems. This card is a robust and scalable solution for creating a powerful communication hub for data acquisition, point-of-sale, and control systems, ensuring long-term compatibility and performance.