Belkin F4U047BT, Usb 2.0 Ethernet, Device Network adapter, Port 10/100 Ethernet, Connectivity Wired, Interface 1 x 100Base-TX - RJ-45 - female, O/S Apple MacOS X 10.3 or later, Microsoft Windows 2000/XP/Vista/7. The USB 2.0 Ethernet Adapter connects your desktop or laptop to your network or DSL modem. Share your high-speed Internet connection as well as files, printers, and hard drives when using a router as the central connection point of your network.