The StarTech ST100S 1 Port PCI 10/100Mbps Ethernet Network Adapter Card is a fast Ethernet card designed for use with PCs. It features a single RJ-45 port with a maximum data rate of 100 Mbps, making it ideal for networking tasks. This card is compatible with a universal range of products and is packaged individually. With a compact PC Card form factor, it is easy to install and use, providing a reliable connection for your computer.