This Xircom RealPort CardBus offers high-quality network and modem capabilities for your laptop. With a maximum data rate of 100 Mbps, it is compatible with a range of brands and products, making it a versatile addition to your collection. The card's external interfaces include DSL/Phone (RJ-11) and Ethernet (RJ-45), and it has three ports to connect your devices. Its form factor is designed for a CardBus slot, and it is compatible with both desktop and laptop products. This Xircom RealPort CardBus is a great choice for anyone looking to expand their networking capabilities.