The Apple Thunderbolt to Gigabit Ethernet Adapter lets you easily connect to a high-performance Gigabit Ethernet network. Small and compact, it connects to the Thunderbolt port on your Mac® computer and provides an RJ-45 port that supports 10/100/1000BASE-T networks. Requires OS X v. 10.7.4 or later and a Thunderbolt-equipped Mac computer.