USB - 1 x RJ-45 10/100/1000Base-T - 10Mbps Ethernet, 100Mbps Fast Ethernet, 1Gbps Gigabit Ethernet - Twisted Pair
From the Manufacturer
The Belkin Gigabit USB 2.0 Network Adapter lets you easily upgrade your notebook or desktop computer to full gigabit speeds. The Adapter is backward-compatible with all existing 10/100 networks. To install, simply insert the Adapter into a USB 2.0 port on your computer and begin to transfer large video, audio, and graphics fi les between your workstation and the network. It's so simple to install, you'll be moving fi les throughout your network within minutes. The Belkin Gigabit USB 2.0 Network Adapter auto-negotiates for a 10-, 100-, or 1000 Mbps network and automatically adjusts for straight-through or crossover cables-you don't have to worry about cable type.