Apple USB Ethernet Adapter - network adapter - USB 2.0 - 10/100 Ethernet

The Apple USB Ethernet Adapter is a simple, one-piece external adapter that plugs into the USB 2.0 port of your MacBook Air to provide 10/100BASE-T performance. Simply plug your Ethernet cable into the RJ-45 connector - no external power is required. It's small, light, easy to install, and even easier to use.