The 4100 Ethernet model works with any Ethernet equipped PC, regardless of operating system, while the 4200 Ethernet/USB combo model's dual interface is almost like two products for the price of one. Subscribers get the flexibility of connecting with convenient Ethernet or using effortless, plug-and-play USB, maximizing deployment options and subscriber value.,The 4100 Ethernet model works with any Ethernet equipped PC, regardless of operating system, while