This Xircom Realport Cardbus Ethernet Modem Card is a high-quality networking component that provides reliable and fast connectivity. With its three ports and Ethernet (RJ-45) external interface, this unit is perfect for any computer setup that requires multiple connections. The modem card is compatible with CardBus and comes in a compact form factor that can easily be installed in your system. The Xircom Realport Cardbus Ethernet Modem Card RBEM56G-100 is a great addition to any network setup. Its compatibility with CardBus and Ethernet (RJ-45) makes it a versatile component that can handle multiple connections with ease. This unit is perfect for anyone in need of a reliable and fast modem card, and it comes in a compact form factor that can easily be installed in your system.