The 3Com 3C905B-TXNM Fast EtherLink XL PCI 10/100 Network Adapter Card is a high-quality lan card designed for computers. With a maximum data rate of 100 Mbps, it offers fast and reliable network connectivity. This card features one Ethernet port for external connections and is compatible with a universal range of brands and models. Manufactured in the United States by 3Com, a trusted brand in networking technology, this PCI adapter ensures seamless integration into your computer system for efficient network performance.