The 2 Port PCI RS422/485 Serial from StarTech is a high-quality and reliable device that allows you to expand the connectivity options of your computer system. With this PCI card, you can easily add two additional ports for RS422 or RS485 serial communication. Designed by StarTech, a trusted brand in computer accessories, this product ensures seamless data transfer and efficient communication between your computer and external devices. This PCI card is perfect for industrial applications, automation systems, and other scenarios that require reliable serial communication. It supports both RS422 and RS485 protocols, providing flexible connectivity options for various devices. With its sturdy construction and advanced technology, this PCI card offers superior performance and durability. Installation is quick and easy, thanks to the plug-and-play feature and the included drivers. Simply insert the card into your computer's PCI slot, install the drivers, and you're ready to go. The 2 Port PCI RS422/485 Serial from StarTech is a must-have for businesses and individuals who need reliable and efficient serial communication capabilities.