The 4 Port RS232 PCI Express Serial from StarTech is a high-performance expansion card that allows you to add four RS232 serial ports to your computer system. This PCI Express card is designed to provide reliable and fast serial communication, making it perfect for connecting a wide range of devices such as modems, printers, scanners, and more. With its advanced chipset, this card delivers high-speed data transfer rates of up to 921.6 Kbps, ensuring efficient and seamless communication between your computer and the connected devices. The included breakout cable provides easy connectivity to the four serial ports, allowing you to conveniently connect your devices without any hassle. The 4 Port RS232 PCI Express Serial card is compatible with a variety of Windows operating systems and is easy to install, making it an ideal choice for both professional and home use. With its compact and durable design, this expansion card offers a reliable solution for expanding your computer's connectivity options and enhancing your productivity. Upgrade your system today with the 4 Port RS232 PCI Express Serial card from StarTech.