The D-Link DFE-690TXD Fast Ethernet CardBus PC Card is a LAN card with a maximum data rate of 100 Mbps. This card allows users to easily add fast Ethernet capabilities to their desktop or laptop computers. With the reliable D-Link brand and compatibility with CardBus PC Cards, users can enjoy high-speed network connectivity for various tasks such as file transfer, online gaming, and multimedia streaming. This product is ideal for those looking to enhance their computer's networking capabilities.