The Startech PCI2S550 Dual PCI DB9 Serial Communications Card is a wired external interface card specifically designed for serial communication needs. With its compatibility with PCI ports, this model from StarTech provides reliable and efficient connectivity for various devices. Perfect for expanding port capabilities in computers, this dual PCI DB9 serial card offers seamless integration and high-performance functionality for serial connections. Ideal for professionals looking to enhance their computer's connectivity options, this card is a dependable choice for expanding serial communication capabilities.